diff --git a/docs/v1/accounting/index.html b/docs/v1/accounting/index.html
index 674fb0bf..c9611cb9 100644
--- a/docs/v1/accounting/index.html
+++ b/docs/v1/accounting/index.html
@@ -6093,7 +6093,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="Accounting"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="Accounting"><strong>VSN: </strong>1.27.0</li>
+              <li class="nav-header" data-group="Accounting"><strong>VSN: </strong>2.0.0</li>
               <li class="nav-header" data-group="Accounting"><a href="#api-Accounting">Methods</a></li>
               <li data-group="Accounting" data-name="createAccount" class="">
                 <a href="#api-Accounting-createAccount">createAccount</a>
@@ -7622,8 +7622,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_create_bank_transactions():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
 
     contact = Contact(
         contact_id = "00000000-0000-0000-0000-000000000000")
@@ -7650,7 +7650,7 @@ <h3>Usage and SDK Samples</h3>
         bank_transactions = [bank_transaction])
     
     try:
-        api_response = api_instance.create_bank_transactions(xero_tenant_id, bankTransactions, idempotency_key, summarize_errors, unitdp)
+        api_response = api_instance.create_bank_transactions(xero_tenant_id, bankTransactions, summarize_errors, unitdp, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->createBankTransactions: %s\n" % e)</code></pre>
@@ -9725,8 +9725,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_create_contacts():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
 
     phone = Phone(
         phone_number = "555-1212",
@@ -9744,7 +9744,7 @@ <h3>Usage and SDK Samples</h3>
         contacts = [contact])
     
     try:
-        api_response = api_instance.create_contacts(xero_tenant_id, contacts, idempotency_key, summarize_errors)
+        api_response = api_instance.create_contacts(xero_tenant_id, contacts, summarize_errors, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->createContacts: %s\n" % e)</code></pre>
@@ -9917,8 +9917,8 @@ <h3>Usage and SDK Samples</h3>
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
     credit_note_id = '00000000-0000-0000-0000-000000000000'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
     curr_date = dateutil.parser.parse('2020-12-03T00:00:00Z')
 
     invoice = Invoice(
@@ -9933,7 +9933,7 @@ <h3>Usage and SDK Samples</h3>
         allocations = [allocation])
     
     try:
-        api_response = api_instance.create_credit_note_allocation(xero_tenant_id, credit_note_id, allocations, idempotency_key, summarize_errors)
+        api_response = api_instance.create_credit_note_allocation(xero_tenant_id, credit_note_id, allocations, summarize_errors, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->createCreditNoteAllocation: %s\n" % e)</code></pre>
@@ -10140,15 +10140,15 @@ <h3>Usage and SDK Samples</h3>
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
     credit_note_id = '00000000-0000-0000-0000-000000000000'
     file_name = 'xero-dev.jpg'
-    idempotency_key = 'KEY_VALUE'
     include_online = 'True'
+    idempotency_key = 'KEY_VALUE'
     
     path_to_upload = Path(__file__).resolve().parent.joinpath(fileName)
     open_file = open(path_to_upload, 'rb')
         body = open_file.read()
     
     try:
-        api_response = api_instance.create_credit_note_attachment_by_file_name(xero_tenant_id, credit_note_id, file_name, body, idempotency_key, include_online)
+        api_response = api_instance.create_credit_note_attachment_by_file_name(xero_tenant_id, credit_note_id, file_name, body, include_online, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->createCreditNoteAttachmentByFileName: %s\n" % e)</code></pre>
@@ -10564,8 +10564,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_create_credit_notes():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
     curr_date = dateutil.parser.parse('2020-12-03T00:00:00Z')
 
     contact = Contact(
@@ -10590,7 +10590,7 @@ <h3>Usage and SDK Samples</h3>
         credit_notes = [credit_note])
     
     try:
-        api_response = api_instance.create_credit_notes(xero_tenant_id, creditNotes, idempotency_key, summarize_errors, unitdp)
+        api_response = api_instance.create_credit_notes(xero_tenant_id, creditNotes, summarize_errors, unitdp, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->createCreditNotes: %s\n" % e)</code></pre>
@@ -10934,8 +10934,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_create_employees():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
 
     employee = Employee(
         first_name = "Nick",
@@ -10945,7 +10945,7 @@ <h3>Usage and SDK Samples</h3>
         employees = [employee])
     
     try:
-        api_response = api_instance.create_employees(xero_tenant_id, employees, idempotency_key, summarize_errors)
+        api_response = api_instance.create_employees(xero_tenant_id, employees, summarize_errors, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->createEmployees: %s\n" % e)</code></pre>
@@ -11474,15 +11474,15 @@ <h3>Usage and SDK Samples</h3>
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
     invoice_id = '00000000-0000-0000-0000-000000000000'
     file_name = 'xero-dev.jpg'
-    idempotency_key = 'KEY_VALUE'
     include_online = 'True'
+    idempotency_key = 'KEY_VALUE'
     
     path_to_upload = Path(__file__).resolve().parent.joinpath(fileName)
     open_file = open(path_to_upload, 'rb')
         body = open_file.read()
     
     try:
-        api_response = api_instance.create_invoice_attachment_by_file_name(xero_tenant_id, invoice_id, file_name, body, idempotency_key, include_online)
+        api_response = api_instance.create_invoice_attachment_by_file_name(xero_tenant_id, invoice_id, file_name, body, include_online, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->createInvoiceAttachmentByFileName: %s\n" % e)</code></pre>
@@ -11898,8 +11898,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_create_invoices():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
     date_value = dateutil.parser.parse('2020-10-10T00:00:00Z')
     due_date_value = dateutil.parser.parse('2020-10-28T00:00:00Z')
 
@@ -11936,7 +11936,7 @@ <h3>Usage and SDK Samples</h3>
         invoices = [invoice])
     
     try:
-        api_response = api_instance.create_invoices(xero_tenant_id, invoices, idempotency_key, summarize_errors, unitdp)
+        api_response = api_instance.create_invoices(xero_tenant_id, invoices, summarize_errors, unitdp, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->createInvoices: %s\n" % e)</code></pre>
@@ -12316,8 +12316,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_create_items():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
 
     purchase_details = Purchase(
         cogs_account_code = "500")
@@ -12333,7 +12333,7 @@ <h3>Usage and SDK Samples</h3>
         items = [item])
     
     try:
-        api_response = api_instance.create_items(xero_tenant_id, items, idempotency_key, summarize_errors, unitdp)
+        api_response = api_instance.create_items(xero_tenant_id, items, summarize_errors, unitdp, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->createItems: %s\n" % e)</code></pre>
@@ -13075,8 +13075,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_create_manual_journals():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
     date_value = dateutil.parser.parse('2020-12-03T00:00:00Z')
     
     manual_journal_lines = []
@@ -13102,7 +13102,7 @@ <h3>Usage and SDK Samples</h3>
         manual_journals = [manual_journal])
     
     try:
-        api_response = api_instance.create_manual_journals(xero_tenant_id, manualJournals, idempotency_key, summarize_errors)
+        api_response = api_instance.create_manual_journals(xero_tenant_id, manualJournals, summarize_errors, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->createManualJournals: %s\n" % e)</code></pre>
@@ -13275,8 +13275,8 @@ <h3>Usage and SDK Samples</h3>
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
     overpayment_id = '00000000-0000-0000-0000-000000000000'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
     curr_date = dateutil.parser.parse('2020-12-03T00:00:00Z')
 
     invoice = Invoice(
@@ -13291,7 +13291,7 @@ <h3>Usage and SDK Samples</h3>
         allocations = [allocation])
     
     try:
-        api_response = api_instance.create_overpayment_allocations(xero_tenant_id, overpayment_id, allocations, idempotency_key, summarize_errors)
+        api_response = api_instance.create_overpayment_allocations(xero_tenant_id, overpayment_id, allocations, summarize_errors, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->createOverpaymentAllocations: %s\n" % e)</code></pre>
@@ -14192,8 +14192,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_create_payments():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
     date_value = dateutil.parser.parse('2020-10-10T00:00:00Z')
 
     invoice = Invoice(
@@ -14212,7 +14212,7 @@ <h3>Usage and SDK Samples</h3>
         payments = [payment])
     
     try:
-        api_response = api_instance.create_payments(xero_tenant_id, payments, idempotency_key, summarize_errors)
+        api_response = api_instance.create_payments(xero_tenant_id, payments, summarize_errors, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->createPayments: %s\n" % e)</code></pre>
@@ -14385,8 +14385,8 @@ <h3>Usage and SDK Samples</h3>
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
     prepayment_id = '00000000-0000-0000-0000-000000000000'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
     curr_date = dateutil.parser.parse('2020-12-03T00:00:00Z')
 
     invoice = Invoice(
@@ -14401,7 +14401,7 @@ <h3>Usage and SDK Samples</h3>
         allocations = [allocation])
     
     try:
-        api_response = api_instance.create_prepayment_allocations(xero_tenant_id, prepayment_id, allocations, idempotency_key, summarize_errors)
+        api_response = api_instance.create_prepayment_allocations(xero_tenant_id, prepayment_id, allocations, summarize_errors, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->createPrepaymentAllocations: %s\n" % e)</code></pre>
@@ -15192,8 +15192,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_create_purchase_orders():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
     date_value = dateutil.parser.parse('2020-12-03T00:00:00Z')
 
     contact = Contact(
@@ -15217,7 +15217,7 @@ <h3>Usage and SDK Samples</h3>
         purchase_orders = [purchase_order])
     
     try:
-        api_response = api_instance.create_purchase_orders(xero_tenant_id, purchaseOrders, idempotency_key, summarize_errors)
+        api_response = api_instance.create_purchase_orders(xero_tenant_id, purchaseOrders, summarize_errors, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->createPurchaseOrders: %s\n" % e)</code></pre>
@@ -15787,8 +15787,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_create_quotes():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
     date_value = dateutil.parser.parse('2020-12-03T00:00:00Z')
 
     contact = Contact(
@@ -15812,7 +15812,7 @@ <h3>Usage and SDK Samples</h3>
         quotes = [quote])
     
     try:
-        api_response = api_instance.create_quotes(xero_tenant_id, quotes, idempotency_key, summarize_errors)
+        api_response = api_instance.create_quotes(xero_tenant_id, quotes, summarize_errors, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->createQuotes: %s\n" % e)</code></pre>
@@ -16012,7 +16012,7 @@ <h3>Usage and SDK Samples</h3>
         receipts = [receipt])
     
     try:
-        api_response = api_instance.create_receipt(xero_tenant_id, receipts, idempotency_key, unitdp)
+        api_response = api_instance.create_receipt(xero_tenant_id, receipts, unitdp, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->createReceipt: %s\n" % e)</code></pre>
@@ -16980,11 +16980,11 @@ <h3>Usage and SDK Samples</h3>
 def accounting_create_repeating_invoices():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
     
     try:
-        api_response = api_instance.create_repeating_invoices(xero_tenant_id, repeatingInvoices, idempotency_key, summarize_errors)
+        api_response = api_instance.create_repeating_invoices(xero_tenant_id, repeatingInvoices, summarize_errors, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->createRepeatingInvoices: %s\n" % e)</code></pre>
@@ -39977,7 +39977,7 @@ <h3>Usage and SDK Samples</h3>
         bank_transactions = [bank_transaction])
     
     try:
-        api_response = api_instance.update_bank_transaction(xero_tenant_id, bank_transaction_id, bankTransactions, idempotency_key, unitdp)
+        api_response = api_instance.update_bank_transaction(xero_tenant_id, bank_transaction_id, bankTransactions, unitdp, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->updateBankTransaction: %s\n" % e)</code></pre>
@@ -41216,7 +41216,7 @@ <h3>Usage and SDK Samples</h3>
         credit_notes = [credit_note])
     
     try:
-        api_response = api_instance.update_credit_note(xero_tenant_id, credit_note_id, creditNotes, idempotency_key, unitdp)
+        api_response = api_instance.update_credit_note(xero_tenant_id, credit_note_id, creditNotes, unitdp, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->updateCreditNote: %s\n" % e)</code></pre>
@@ -41841,7 +41841,7 @@ <h3>Usage and SDK Samples</h3>
         invoices = [invoice])
     
     try:
-        api_response = api_instance.update_invoice(xero_tenant_id, invoice_id, invoices, idempotency_key, unitdp)
+        api_response = api_instance.update_invoice(xero_tenant_id, invoice_id, invoices, unitdp, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->updateInvoice: %s\n" % e)</code></pre>
@@ -42266,7 +42266,7 @@ <h3>Usage and SDK Samples</h3>
         items = [item])
     
     try:
-        api_response = api_instance.update_item(xero_tenant_id, item_id, items, idempotency_key, unitdp)
+        api_response = api_instance.update_item(xero_tenant_id, item_id, items, unitdp, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->updateItem: %s\n" % e)</code></pre>
@@ -43072,8 +43072,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_update_or_create_bank_transactions():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
 
     contact = Contact(
         contact_id = "00000000-0000-0000-0000-000000000000")
@@ -43100,7 +43100,7 @@ <h3>Usage and SDK Samples</h3>
         bank_transactions = [bank_transaction])
     
     try:
-        api_response = api_instance.update_or_create_bank_transactions(xero_tenant_id, bankTransactions, idempotency_key, summarize_errors, unitdp)
+        api_response = api_instance.update_or_create_bank_transactions(xero_tenant_id, bankTransactions, summarize_errors, unitdp, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->updateOrCreateBankTransactions: %s\n" % e)</code></pre>
@@ -43291,8 +43291,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_update_or_create_contacts():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
 
     phone = Phone(
         phone_number = "555-1212",
@@ -43310,7 +43310,7 @@ <h3>Usage and SDK Samples</h3>
         contacts = [contact])
     
     try:
-        api_response = api_instance.update_or_create_contacts(xero_tenant_id, contacts, idempotency_key, summarize_errors)
+        api_response = api_instance.update_or_create_contacts(xero_tenant_id, contacts, summarize_errors, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->updateOrCreateContacts: %s\n" % e)</code></pre>
@@ -43481,8 +43481,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_update_or_create_credit_notes():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
     curr_date = dateutil.parser.parse('2020-12-03T00:00:00Z')
 
     contact = Contact(
@@ -43507,7 +43507,7 @@ <h3>Usage and SDK Samples</h3>
         credit_notes = [credit_note])
     
     try:
-        api_response = api_instance.update_or_create_credit_notes(xero_tenant_id, creditNotes, idempotency_key, summarize_errors, unitdp)
+        api_response = api_instance.update_or_create_credit_notes(xero_tenant_id, creditNotes, summarize_errors, unitdp, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->updateOrCreateCreditNotes: %s\n" % e)</code></pre>
@@ -43699,8 +43699,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_update_or_create_employees():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
 
     employee = Employee(
         first_name = "Nick",
@@ -43710,7 +43710,7 @@ <h3>Usage and SDK Samples</h3>
         employees = [employee])
     
     try:
-        api_response = api_instance.update_or_create_employees(xero_tenant_id, employees, idempotency_key, summarize_errors)
+        api_response = api_instance.update_or_create_employees(xero_tenant_id, employees, summarize_errors, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->updateOrCreateEmployees: %s\n" % e)</code></pre>
@@ -43882,8 +43882,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_update_or_create_invoices():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
     date_value = dateutil.parser.parse('2020-10-10T00:00:00Z')
     due_date_value = dateutil.parser.parse('2020-10-28T00:00:00Z')
 
@@ -43912,7 +43912,7 @@ <h3>Usage and SDK Samples</h3>
         invoices = [invoice])
     
     try:
-        api_response = api_instance.update_or_create_invoices(xero_tenant_id, invoices, idempotency_key, summarize_errors, unitdp)
+        api_response = api_instance.update_or_create_invoices(xero_tenant_id, invoices, summarize_errors, unitdp, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->updateOrCreateInvoices: %s\n" % e)</code></pre>
@@ -44103,8 +44103,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_update_or_create_items():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
 
     item = Item(
         code = "abcXYZ123",
@@ -44115,7 +44115,7 @@ <h3>Usage and SDK Samples</h3>
         items = [item])
     
     try:
-        api_response = api_instance.update_or_create_items(xero_tenant_id, items, idempotency_key, summarize_errors, unitdp)
+        api_response = api_instance.update_or_create_items(xero_tenant_id, items, summarize_errors, unitdp, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->updateOrCreateItems: %s\n" % e)</code></pre>
@@ -44306,8 +44306,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_update_or_create_manual_journals():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
     date_value = dateutil.parser.parse('2020-12-03T00:00:00Z')
     
     manual_journal_lines = []
@@ -44333,7 +44333,7 @@ <h3>Usage and SDK Samples</h3>
         manual_journals = [manual_journal])
     
     try:
-        api_response = api_instance.update_or_create_manual_journals(xero_tenant_id, manualJournals, idempotency_key, summarize_errors)
+        api_response = api_instance.update_or_create_manual_journals(xero_tenant_id, manualJournals, summarize_errors, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->updateOrCreateManualJournals: %s\n" % e)</code></pre>
@@ -44505,8 +44505,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_update_or_create_purchase_orders():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
     date_value = dateutil.parser.parse('2020-12-03T00:00:00Z')
 
     contact = Contact(
@@ -44530,7 +44530,7 @@ <h3>Usage and SDK Samples</h3>
         purchase_orders = [purchase_order])
     
     try:
-        api_response = api_instance.update_or_create_purchase_orders(xero_tenant_id, purchaseOrders, idempotency_key, summarize_errors)
+        api_response = api_instance.update_or_create_purchase_orders(xero_tenant_id, purchaseOrders, summarize_errors, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->updateOrCreatePurchaseOrders: %s\n" % e)</code></pre>
@@ -44701,8 +44701,8 @@ <h3>Usage and SDK Samples</h3>
 def accounting_update_or_create_quotes():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
     date_value = dateutil.parser.parse('2020-12-03T00:00:00Z')
 
     contact = Contact(
@@ -44726,7 +44726,7 @@ <h3>Usage and SDK Samples</h3>
         quotes = [quote])
     
     try:
-        api_response = api_instance.update_or_create_quotes(xero_tenant_id, quotes, idempotency_key, summarize_errors)
+        api_response = api_instance.update_or_create_quotes(xero_tenant_id, quotes, summarize_errors, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->updateOrCreateQuotes: %s\n" % e)</code></pre>
@@ -44897,11 +44897,11 @@ <h3>Usage and SDK Samples</h3>
 def accounting_update_or_create_repeating_invoices():
     api_instance = AccountingApi(api_client)
     xero_tenant_id = 'YOUR_XERO_TENANT_ID'
-    idempotency_key = 'KEY_VALUE'
     summarize_errors = 'True'
+    idempotency_key = 'KEY_VALUE'
     
     try:
-        api_response = api_instance.update_or_create_repeating_invoices(xero_tenant_id, repeatingInvoices, idempotency_key, summarize_errors)
+        api_response = api_instance.update_or_create_repeating_invoices(xero_tenant_id, repeatingInvoices, summarize_errors, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->updateOrCreateRepeatingInvoices: %s\n" % e)</code></pre>
@@ -45889,7 +45889,7 @@ <h3>Usage and SDK Samples</h3>
         receipts = [receipt])
     
     try:
-        api_response = api_instance.update_receipt(xero_tenant_id, receipt_id, receipts, idempotency_key, unitdp)
+        api_response = api_instance.update_receipt(xero_tenant_id, receipt_id, receipts, unitdp, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AccountingApi->updateReceipt: %s\n" % e)</code></pre>
diff --git a/docs/v1/appstore/index.html b/docs/v1/appstore/index.html
index 943e8d9f..4507deb8 100644
--- a/docs/v1/appstore/index.html
+++ b/docs/v1/appstore/index.html
@@ -1241,7 +1241,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="AppStore"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="AppStore"><strong>VSN: </strong>1.27.0</li>
+              <li class="nav-header" data-group="AppStore"><strong>VSN: </strong>2.0.0</li>
               <li class="nav-header" data-group="AppStore"><a href="#api-AppStore">Methods</a></li>
               <li data-group="AppStore" data-name="getSubscription" class="">
                 <a href="#api-AppStore-getSubscription">getSubscription</a>
diff --git a/docs/v1/assets/index.html b/docs/v1/assets/index.html
index f4393e09..f3f2477c 100644
--- a/docs/v1/assets/index.html
+++ b/docs/v1/assets/index.html
@@ -1392,7 +1392,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="Asset"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="Asset"><strong>VSN: </strong>1.27.0</li>
+              <li class="nav-header" data-group="Asset"><strong>VSN: </strong>2.0.0</li>
               <li class="nav-header" data-group="Asset"><a href="#api-Asset">Methods</a></li>
               <li data-group="Asset" data-name="createAsset" class="">
                 <a href="#api-Asset-createAsset">createAsset</a>
@@ -1638,7 +1638,7 @@ <h3>Usage and SDK Samples</h3>
         book_depreciation_setting = book_depreciation_setting)
     
     try:
-        api_response = api_instance.create_asset_type(xero_tenant_id, idempotency_key, assetType)
+        api_response = api_instance.create_asset_type(xero_tenant_id, assetType, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling AssetApi->createAssetType: %s\n" % e)</code></pre>
@@ -1711,7 +1711,7 @@ <h2>Parameters</h2>
                       <th>Description</th>
                     </tr>
                     <tr>
-  <td style="width:150px;">assetType </td>
+  <td style="width:150px;">assetType <span style="color:red;">*</span></td>
   <td>
     <div class="json-schema-view">
       <div class="primitive">
@@ -1722,6 +1722,9 @@ <h2>Parameters</h2>
           Asset type to add
         </div>
       </div>
+      <div class="inner required">
+        Required
+      </div>
     </div>
     <script type="application/ld+json">
       {
@@ -1733,7 +1736,8 @@ <h2>Parameters</h2>
       },
       "example" : "{ \"assetTypeName\":\"Machinery11004\", \"fixedAssetAccountId\":\"3d8d063a-c148-4bb8-8b3c-a5e2ad3b1e82\", \"depreciationExpenseAccountId\":\"d1602f69-f900-4616-8d34-90af393fa368\", \"accumulatedDepreciationAccountId\":\"9195cadd-8645-41e6-9f67-7bcd421defe8\", \"bookDepreciationSetting\":{ \"depreciationMethod\":\"DiminishingValue100\", \"averagingMethod\":\"ActualDays\", \"depreciationRate\":0.05, \"depreciationCalculationMethod\":\"None\" } }"
     }
-  }
+  },
+  "required" : true
 }
     </script>
                   </table>
diff --git a/docs/v1/files/index.html b/docs/v1/files/index.html
index 2cd67923..f63b7927 100644
--- a/docs/v1/files/index.html
+++ b/docs/v1/files/index.html
@@ -1155,7 +1155,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="Files"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="Files"><strong>VSN: </strong>1.27.0</li>
+              <li class="nav-header" data-group="Files"><strong>VSN: </strong>2.0.0</li>
               <li class="nav-header" data-group="Files"><a href="#api-Files">Methods</a></li>
               <li data-group="Files" data-name="createFileAssociation" class="">
                 <a href="#api-Files-createFileAssociation">createFileAssociation</a>
@@ -1272,7 +1272,7 @@ <h3>Usage and SDK Samples</h3>
     idempotency_key = 'KEY_VALUE'
     
     try:
-        api_response = api_instance.create_file_association(xero_tenant_id, file_id, idempotency_key, association)
+        api_response = api_instance.create_file_association(xero_tenant_id, file_id, association, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling FilesApi->createFileAssociation: %s\n" % e)</code></pre>
@@ -1378,7 +1378,7 @@ <h2>Parameters</h2>
                       <th>Description</th>
                     </tr>
                     <tr>
-  <td style="width:150px;">association </td>
+  <td style="width:150px;">association <span style="color:red;">*</span></td>
   <td>
     <div class="json-schema-view">
       <div class="primitive">
@@ -1389,6 +1389,9 @@ <h2>Parameters</h2>
           
         </div>
       </div>
+      <div class="inner required">
+        Required
+      </div>
     </div>
     <script type="application/ld+json">
       {
@@ -1399,7 +1402,8 @@ <h2>Parameters</h2>
       },
       "example" : "{ \"ObjectId\": \"1270bf7c-5d18-473a-9231-1e36c4bd33ed\", \"ObjectGroup\": \"Contact\", \"ObjectType\": \"Business\" }"
     }
-  }
+  },
+  "required" : true
 }
     </script>
                   </table>
@@ -1448,7 +1452,7 @@ <h3>Usage and SDK Samples</h3>
     idempotency_key = 'KEY_VALUE'
     
     try:
-        api_response = api_instance.create_folder(xero_tenant_id, idempotency_key, folder)
+        api_response = api_instance.create_folder(xero_tenant_id, folder, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling FilesApi->createFolder: %s\n" % e)</code></pre>
@@ -1521,7 +1525,7 @@ <h2>Parameters</h2>
                       <th>Description</th>
                     </tr>
                     <tr>
-  <td style="width:150px;">folder </td>
+  <td style="width:150px;">folder <span style="color:red;">*</span></td>
   <td>
     <div class="json-schema-view">
       <div class="primitive">
@@ -1532,6 +1536,9 @@ <h2>Parameters</h2>
           
         </div>
       </div>
+      <div class="inner required">
+        Required
+      </div>
     </div>
     <script type="application/ld+json">
       {
@@ -1542,7 +1549,8 @@ <h2>Parameters</h2>
       },
       "example" : "{ \"Name\": \"My Docs\" }"
     }
-  }
+  },
+  "required" : true
 }
     </script>
                   </table>
@@ -3232,7 +3240,7 @@ <h3>Usage and SDK Samples</h3>
     idempotency_key = 'KEY_VALUE'
     
     try:
-        api_response = api_instance.update_file(xero_tenant_id, file_id, idempotency_key, fileObject)
+        api_response = api_instance.update_file(xero_tenant_id, file_id, fileObject, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling FilesApi->updateFile: %s\n" % e)</code></pre>
@@ -3338,7 +3346,7 @@ <h2>Parameters</h2>
                       <th>Description</th>
                     </tr>
                     <tr>
-  <td style="width:150px;">fileObject </td>
+  <td style="width:150px;">fileObject <span style="color:red;">*</span></td>
   <td>
     <div class="json-schema-view">
       <div class="primitive">
@@ -3349,6 +3357,9 @@ <h2>Parameters</h2>
           
         </div>
       </div>
+      <div class="inner required">
+        Required
+      </div>
     </div>
     <script type="application/ld+json">
       {
@@ -3359,7 +3370,8 @@ <h2>Parameters</h2>
       },
       "example" : "{ \"FolderId\": \"bf924975-7097-46f2-a143-1ecfbab3c8c3\" }"
     }
-  }
+  },
+  "required" : true
 }
     </script>
                   </table>
diff --git a/docs/v1/finance/index.html b/docs/v1/finance/index.html
index 6d731eeb..4f3a0273 100644
--- a/docs/v1/finance/index.html
+++ b/docs/v1/finance/index.html
@@ -2734,7 +2734,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="Finance"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="Finance"><strong>VSN: </strong>1.27.0</li>
+              <li class="nav-header" data-group="Finance"><strong>VSN: </strong>2.0.0</li>
               <li class="nav-header" data-group="Finance"><a href="#api-Finance">Methods</a></li>
               <li data-group="Finance" data-name="getAccountingActivityAccountUsage" class="">
                 <a href="#api-Finance-getAccountingActivityAccountUsage">getAccountingActivityAccountUsage</a>
diff --git a/docs/v1/payroll-au/index.html b/docs/v1/payroll-au/index.html
index 802c895d..a4fdfae8 100644
--- a/docs/v1/payroll-au/index.html
+++ b/docs/v1/payroll-au/index.html
@@ -3412,7 +3412,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="PayrollAu"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="PayrollAu"><strong>VSN: </strong>1.27.0</li>
+              <li class="nav-header" data-group="PayrollAu"><strong>VSN: </strong>2.0.0</li>
               <li class="nav-header" data-group="PayrollAu"><a href="#api-PayrollAu">Methods</a></li>
               <li data-group="PayrollAu" data-name="approveLeaveApplication" class="">
                 <a href="#api-PayrollAu-approveLeaveApplication">approveLeaveApplication</a>
@@ -7656,7 +7656,7 @@ <h3>Usage and SDK Samples</h3>
         homeAddress = home_address)
     
     try:
-        api_response = api_instance.update_employee(xero_tenant_id, employee_id, idempotency_key, employee)
+        api_response = api_instance.update_employee(xero_tenant_id, employee_id, employee, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling PayrollAuApi->updateEmployee: %s\n" % e)</code></pre>
@@ -7762,7 +7762,7 @@ <h2>Parameters</h2>
                       <th>Description</th>
                     </tr>
                     <tr>
-  <td style="width:150px;">employee </td>
+  <td style="width:150px;">employee <span style="color:red;">*</span></td>
   <td>
     <div class="json-schema-view">
       <div class="primitive">
@@ -7773,6 +7773,9 @@ <h2>Parameters</h2>
           
         </div>
       </div>
+      <div class="inner required">
+        Required
+      </div>
     </div>
     <script type="application/ld+json">
       {
@@ -7786,7 +7789,8 @@ <h2>Parameters</h2>
       },
       "example" : "[ { \"MiddleNames\": \"Frank\" } ]"
     }
-  }
+  },
+  "required" : true
 }
     </script>
                   </table>
@@ -8032,7 +8036,7 @@ <h3>Usage and SDK Samples</h3>
         payroll_calendar_id = "00000000-0000-0000-0000-000000000000")
     
     try:
-        api_response = api_instance.update_pay_run(xero_tenant_id, pay_run_id, idempotency_key, payRun)
+        api_response = api_instance.update_pay_run(xero_tenant_id, pay_run_id, payRun, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling PayrollAuApi->updatePayRun: %s\n" % e)</code></pre>
@@ -8138,7 +8142,7 @@ <h2>Parameters</h2>
                       <th>Description</th>
                     </tr>
                     <tr>
-  <td style="width:150px;">payRun </td>
+  <td style="width:150px;">payRun <span style="color:red;">*</span></td>
   <td>
     <div class="json-schema-view">
       <div class="primitive">
@@ -8149,6 +8153,9 @@ <h2>Parameters</h2>
           
         </div>
       </div>
+      <div class="inner required">
+        Required
+      </div>
     </div>
     <script type="application/ld+json">
       {
@@ -8162,7 +8169,8 @@ <h2>Parameters</h2>
         }
       }
     }
-  }
+  },
+  "required" : true
 }
     </script>
                   </table>
@@ -8226,7 +8234,7 @@ <h3>Usage and SDK Samples</h3>
     payslip_lines.append(payslip_line)
     
     try:
-        api_response = api_instance.update_payslip(xero_tenant_id, payslip_id, idempotency_key, payslipLines)
+        api_response = api_instance.update_payslip(xero_tenant_id, payslip_id, payslipLines, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling PayrollAuApi->updatePayslip: %s\n" % e)</code></pre>
@@ -8332,7 +8340,7 @@ <h2>Parameters</h2>
                       <th>Description</th>
                     </tr>
                     <tr>
-  <td style="width:150px;">payslipLines </td>
+  <td style="width:150px;">payslipLines <span style="color:red;">*</span></td>
   <td>
     <div class="json-schema-view">
       <div class="primitive">
@@ -8343,6 +8351,9 @@ <h2>Parameters</h2>
           
         </div>
       </div>
+      <div class="inner required">
+        Required
+      </div>
     </div>
     <script type="application/ld+json">
       {
@@ -8356,7 +8367,8 @@ <h2>Parameters</h2>
       },
       "example" : "{ \"Payslip\": { \"EmployeeID\": \"cdfb8371-0b21-4b8a-8903-1024df6c391e\", \"DeductionLines\": [ { \"DeductionTypeID\": \"727af5e8-b347-4ae7-85fc-9b82266d0aec\", \"CalculationType\": \"FIXEDAMOUNT\", \"NumberOfUnits\": 10 } ] } }"
     }
-  }
+  },
+  "required" : true
 }
     </script>
                   </table>
@@ -8410,7 +8422,7 @@ <h3>Usage and SDK Samples</h3>
         USI = "40022701955002")
     
     try:
-        api_response = api_instance.update_superfund(xero_tenant_id, super_fund_id, idempotency_key, superFund)
+        api_response = api_instance.update_superfund(xero_tenant_id, super_fund_id, superFund, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling PayrollAuApi->updateSuperfund: %s\n" % e)</code></pre>
@@ -8516,7 +8528,7 @@ <h2>Parameters</h2>
                       <th>Description</th>
                     </tr>
                     <tr>
-  <td style="width:150px;">superFund </td>
+  <td style="width:150px;">superFund <span style="color:red;">*</span></td>
   <td>
     <div class="json-schema-view">
       <div class="primitive">
@@ -8527,6 +8539,9 @@ <h2>Parameters</h2>
           
         </div>
       </div>
+      <div class="inner required">
+        Required
+      </div>
     </div>
     <script type="application/ld+json">
       {
@@ -8540,7 +8555,8 @@ <h2>Parameters</h2>
       },
       "example" : " [ { \"Type\":\"REGULATED\", \"Name\":\"Nice23534\" } ]"
     }
-  }
+  },
+  "required" : true
 }
     </script>
                   </table>
@@ -8598,7 +8614,7 @@ <h3>Usage and SDK Samples</h3>
         status = "DRAFT")
     
     try:
-        api_response = api_instance.update_timesheet(xero_tenant_id, timesheet_id, idempotency_key, timesheet)
+        api_response = api_instance.update_timesheet(xero_tenant_id, timesheet_id, timesheet, idempotency_key)
         print(api_response)
     except AccountingBadRequestException as e:
         print("Exception when calling PayrollAuApi->updateTimesheet: %s\n" % e)</code></pre>
@@ -8704,7 +8720,7 @@ <h2>Parameters</h2>
                       <th>Description</th>
                     </tr>
                     <tr>
-  <td style="width:150px;">timesheet </td>
+  <td style="width:150px;">timesheet <span style="color:red;">*</span></td>
   <td>
     <div class="json-schema-view">
       <div class="primitive">
@@ -8715,6 +8731,9 @@ <h2>Parameters</h2>
           
         </div>
       </div>
+      <div class="inner required">
+        Required
+      </div>
     </div>
     <script type="application/ld+json">
       {
@@ -8728,7 +8747,8 @@ <h2>Parameters</h2>
       },
       "example" : "[ { \"EmployeeID\":\"b34e89ff-770d-4099-b7e5-f968767118bc\", \"StartDate\":\"/Date(1573171200000+0000)/\", \"EndDate\":\"/Date(1573689600000+0000)/\", \"Status\":\"APPROVED\", \"Hours\":22.0, \"TimesheetID\":\"a7eb0a79-8511-4ee7-b473-3a25f28abcb9\", \"TimesheetLines\":[ { \"EarningsRateID\":\"ab874dfb-ab09-4c91-954e-43acf6fc23b4\", \"TrackingItemID\":\"af5e9ce2-2349-4136-be99-3561b189f473\", \"NumberOfUnits\":[ 2.0, 10.0, 0.0, 0.0, 5.0, 0.0, 5.0 ], \"UpdatedDateUTC\":\"/Date(1573516185127+0000)/\" } ] } ]"
     }
-  }
+  },
+  "required" : true
 }
     </script>
                   </table>
diff --git a/docs/v1/payroll-nz/index.html b/docs/v1/payroll-nz/index.html
index f120e4e8..a2820c18 100644
--- a/docs/v1/payroll-nz/index.html
+++ b/docs/v1/payroll-nz/index.html
@@ -3843,7 +3843,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="PayrollNz"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="PayrollNz"><strong>VSN: </strong>1.27.0</li>
+              <li class="nav-header" data-group="PayrollNz"><strong>VSN: </strong>2.0.0</li>
               <li class="nav-header" data-group="PayrollNz"><a href="#api-PayrollNz">Methods</a></li>
               <li data-group="PayrollNz" data-name="approveTimesheet" class="">
                 <a href="#api-PayrollNz-approveTimesheet">approveTimesheet</a>
diff --git a/docs/v1/payroll-uk/index.html b/docs/v1/payroll-uk/index.html
index 73380eef..77528ce1 100644
--- a/docs/v1/payroll-uk/index.html
+++ b/docs/v1/payroll-uk/index.html
@@ -3510,7 +3510,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="PayrollUk"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="PayrollUk"><strong>VSN: </strong>1.27.0</li>
+              <li class="nav-header" data-group="PayrollUk"><strong>VSN: </strong>2.0.0</li>
               <li class="nav-header" data-group="PayrollUk"><a href="#api-PayrollUk">Methods</a></li>
               <li data-group="PayrollUk" data-name="approveTimesheet" class="">
                 <a href="#api-PayrollUk-approveTimesheet">approveTimesheet</a>
diff --git a/docs/v1/projects/index.html b/docs/v1/projects/index.html
index ca41a311..ae74476c 100644
--- a/docs/v1/projects/index.html
+++ b/docs/v1/projects/index.html
@@ -1462,7 +1462,7 @@
           <nav id="scrollingNav">
             <ul class="sidenav nav nav-list">
               <li class="nav-header" data-group="Project"><strong>SDK: </strong><span id='sdk-name'></span></li>
-              <li class="nav-header" data-group="Project"><strong>VSN: </strong>1.27.0</li>
+              <li class="nav-header" data-group="Project"><strong>VSN: </strong>2.0.0</li>
               <li class="nav-header" data-group="Project"><a href="#api-Project">Methods</a></li>
               <li data-group="Project" data-name="createProject" class="">
                 <a href="#api-Project-createProject">createProject</a>
diff --git a/setup.py b/setup.py
index e9a4955b..d5b7f55c 100644
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@ def load_requirements(file_name):
 
 
 def read_file(filename):
-    with open(filename, encoding='utf-8') as fp:
+    with open(filename, encoding="utf-8") as fp:
         return fp.read()
 
 
@@ -48,5 +48,5 @@ def read_file(filename):
     keywords="xero python sdk API oAuth",
     name="xero_python",
     packages=find_packages(include=["xero_python", "xero_python.*"]),
-    version="1.27.0",
+    version="2.0.0",
 )
diff --git a/tests/accounting/api/test_accounting_api.py b/tests/accounting/api/test_accounting_api.py
index ed4b9663..77a86362 100644
--- a/tests/accounting/api/test_accounting_api.py
+++ b/tests/accounting/api/test_accounting_api.py
@@ -86,11 +86,11 @@ def test_invoice_attachment_upload_and_download(
 ):
     """This is a full integration test, tested steps are:
 
-       1. get first page of invoices
-       2. choose first invoice
-       3. upload test pdf file as invoice attachment
-       4. confirm the invoice has new attachment
-       5. download uploaded pdf file
+    1. get first page of invoices
+    2. choose first invoice
+    3. upload test pdf file as invoice attachment
+    4. confirm the invoice has new attachment
+    5. download uploaded pdf file
     """
 
     # 1. get first page of invoices
@@ -373,7 +373,7 @@ def test_get_invoices(sandbox_accounting_api: AccountingApi, xero_tenant_id):
                 is_discounted=False,
                 line_amount_types=LineAmountTypes.EXCLUSIVE,
                 reference="Red Fish, Blue Fish",
-                repeating_invoice_id= '428c0d75-909f-4b04-8403-a48dc27283b0',
+                repeating_invoice_id="428c0d75-909f-4b04-8403-a48dc27283b0",
                 sent_to_contact=True,
                 status="VOIDED",
                 sub_total=Decimal("40.00"),
diff --git a/tests/conftest.py b/tests/conftest.py
index 049d4057..9c76c301 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -127,6 +127,7 @@ def oauth2_token(
         "token_type": "Bearer",
     }
 
+
 @pytest.fixture()
 def oauth2_token_without_id_token(
     xero_access_token,
diff --git a/tests/test_api_client/test_oauth2.py b/tests/test_api_client/test_oauth2.py
index 490af0c6..dd8eb6ee 100644
--- a/tests/test_api_client/test_oauth2.py
+++ b/tests/test_api_client/test_oauth2.py
@@ -205,6 +205,7 @@ def test_auth2_call_refresh_token_api(oauth2_refresh_token):
     assert call_kwargs == {}
     assert new_token is token
 
+
 def test_auth2_call_refresh_token_api_without_id_token(oauth2_token_without_id_token):
     # Given valid refresh token and client credentials without using OpenID scope (id_token absent)
     oauth2_token = OAuth2Token()
diff --git a/xero_python/__init__.py b/xero_python/__init__.py
index 2bcbeeb8..12349889 100644
--- a/xero_python/__init__.py
+++ b/xero_python/__init__.py
@@ -2,4 +2,4 @@
 
 __author__ = """Xero Developer API"""
 __email__ = "api@xero.com"
-__version__ = "1.27.0"
+__version__ = "2.0.0"
diff --git a/xero_python/accounting/api/accounting_api.py b/xero_python/accounting/api/accounting_api.py
index 87972398..70fed9e1 100644
--- a/xero_python/accounting/api/accounting_api.py
+++ b/xero_python/accounting/api/accounting_api.py
@@ -10,7 +10,7 @@
 """
 
 """
-    OpenAPI spec version: 2.40.3
+    OpenAPI spec version: 3.0.0
 """
 
 import importlib
@@ -452,9 +452,9 @@ def create_bank_transactions(
         self,
         xero_tenant_id,
         bank_transactions,
-        idempotency_key=empty,
         summarize_errors=empty,
         unitdp=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -463,9 +463,9 @@ def create_bank_transactions(
         OAuth2 scope: accounting.transactions
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param BankTransactions bank_transactions: BankTransactions with an array of BankTransaction objects in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
         :param int unitdp: e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -1493,8 +1493,8 @@ def create_contacts(
         self,
         xero_tenant_id,
         contacts,
-        idempotency_key=empty,
         summarize_errors=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -1503,8 +1503,8 @@ def create_contacts(
         OAuth2 scope: accounting.contacts
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param Contacts contacts: Contacts with an array of Contact objects to create in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -1583,8 +1583,8 @@ def create_credit_note_allocation(
         xero_tenant_id,
         credit_note_id,
         allocations,
-        idempotency_key=empty,
         summarize_errors=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -1594,8 +1594,8 @@ def create_credit_note_allocation(
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param str credit_note_id: Unique identifier for a Credit Note (required)
         :param Allocations allocations: Allocations with array of Allocation object in body of request. (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -1685,8 +1685,8 @@ def create_credit_note_attachment_by_file_name(
         credit_note_id,
         file_name,
         body,
-        idempotency_key=empty,
         include_online=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -1697,8 +1697,8 @@ def create_credit_note_attachment_by_file_name(
         :param str credit_note_id: Unique identifier for a Credit Note (required)
         :param str file_name: Name of the attachment (required)
         :param str body: Byte array of file in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool include_online: Allows an attachment to be seen by the end customer within their online invoice
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -1889,9 +1889,9 @@ def create_credit_notes(
         self,
         xero_tenant_id,
         credit_notes,
-        idempotency_key=empty,
         summarize_errors=empty,
         unitdp=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -1900,9 +1900,9 @@ def create_credit_notes(
         OAuth2 scope: accounting.transactions
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param CreditNotes credit_notes: Credit Notes with array of CreditNote object in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
         :param int unitdp: e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -2067,8 +2067,8 @@ def create_employees(
         self,
         xero_tenant_id,
         employees,
-        idempotency_key=empty,
         summarize_errors=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -2077,8 +2077,8 @@ def create_employees(
         OAuth2 scope: accounting.settings
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param Employees employees: Employees with array of Employee object in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -2338,8 +2338,8 @@ def create_invoice_attachment_by_file_name(
         invoice_id,
         file_name,
         body,
-        idempotency_key=empty,
         include_online=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -2350,8 +2350,8 @@ def create_invoice_attachment_by_file_name(
         :param str invoice_id: Unique identifier for an Invoice (required)
         :param str file_name: Name of the attachment (required)
         :param str body: Byte array of file in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool include_online: Allows an attachment to be seen by the end customer within their online invoice
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -2540,9 +2540,9 @@ def create_invoices(
         self,
         xero_tenant_id,
         invoices,
-        idempotency_key=empty,
         summarize_errors=empty,
         unitdp=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -2551,9 +2551,9 @@ def create_invoices(
         OAuth2 scope: accounting.transactions
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param Invoices invoices: Invoices with an array of invoice objects in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
         :param int unitdp: e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -2728,9 +2728,9 @@ def create_items(
         self,
         xero_tenant_id,
         items,
-        idempotency_key=empty,
         summarize_errors=empty,
         unitdp=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -2739,9 +2739,9 @@ def create_items(
         OAuth2 scope: accounting.settings
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param Items items: Items with an array of Item objects in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
         :param int unitdp: e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -3108,8 +3108,8 @@ def create_manual_journals(
         self,
         xero_tenant_id,
         manual_journals,
-        idempotency_key=empty,
         summarize_errors=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -3118,8 +3118,8 @@ def create_manual_journals(
         OAuth2 scope: accounting.transactions
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param ManualJournals manual_journals: ManualJournals array with ManualJournal object in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -3198,8 +3198,8 @@ def create_overpayment_allocations(
         xero_tenant_id,
         overpayment_id,
         allocations,
-        idempotency_key=empty,
         summarize_errors=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -3209,8 +3209,8 @@ def create_overpayment_allocations(
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param str overpayment_id: Unique identifier for a Overpayment (required)
         :param Allocations allocations: Allocations array with Allocation object in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -3654,8 +3654,8 @@ def create_payments(
         self,
         xero_tenant_id,
         payments,
-        idempotency_key=empty,
         summarize_errors=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -3664,8 +3664,8 @@ def create_payments(
         OAuth2 scope: accounting.transactions
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param Payments payments: Payments array with Payment object in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -3744,8 +3744,8 @@ def create_prepayment_allocations(
         xero_tenant_id,
         prepayment_id,
         allocations,
-        idempotency_key=empty,
         summarize_errors=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -3755,8 +3755,8 @@ def create_prepayment_allocations(
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param str prepayment_id: Unique identifier for a PrePayment (required)
         :param Allocations allocations: Allocations with an array of Allocation object in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -4141,8 +4141,8 @@ def create_purchase_orders(
         self,
         xero_tenant_id,
         purchase_orders,
-        idempotency_key=empty,
         summarize_errors=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -4151,8 +4151,8 @@ def create_purchase_orders(
         OAuth2 scope: accounting.transactions
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param PurchaseOrders purchase_orders: PurchaseOrders with an array of PurchaseOrder object in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -4429,8 +4429,8 @@ def create_quotes(
         self,
         xero_tenant_id,
         quotes,
-        idempotency_key=empty,
         summarize_errors=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -4439,8 +4439,8 @@ def create_quotes(
         OAuth2 scope: accounting.transactions
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param Quotes quotes: Quotes with an array of Quote object in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -4518,8 +4518,8 @@ def create_receipt(
         self,
         xero_tenant_id,
         receipts,
-        idempotency_key=empty,
         unitdp=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -4528,8 +4528,8 @@ def create_receipt(
         OAuth2 scope: accounting.transactions
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param Receipts receipts: Receipts with an array of Receipt object in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param int unitdp: e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -5009,8 +5009,8 @@ def create_repeating_invoices(
         self,
         xero_tenant_id,
         repeating_invoices,
-        idempotency_key=empty,
         summarize_errors=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -5019,8 +5019,8 @@ def create_repeating_invoices(
         OAuth2 scope: accounting.transactions
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param RepeatingInvoices repeating_invoices: RepeatingInvoices with an array of repeating invoice objects in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -17355,8 +17355,8 @@ def update_bank_transaction(
         xero_tenant_id,
         bank_transaction_id,
         bank_transactions,
-        idempotency_key=empty,
         unitdp=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -17366,8 +17366,8 @@ def update_bank_transaction(
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param str bank_transaction_id: Xero generated unique identifier for a bank transaction (required)
         :param BankTransactions bank_transactions: (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param int unitdp: e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -17961,8 +17961,8 @@ def update_credit_note(
         xero_tenant_id,
         credit_note_id,
         credit_notes,
-        idempotency_key=empty,
         unitdp=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -17972,8 +17972,8 @@ def update_credit_note(
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param str credit_note_id: Unique identifier for a Credit Note (required)
         :param CreditNotes credit_notes: an array of Credit Notes containing credit note details to update (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param int unitdp: e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -18261,8 +18261,8 @@ def update_invoice(
         xero_tenant_id,
         invoice_id,
         invoices,
-        idempotency_key=empty,
         unitdp=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -18272,8 +18272,8 @@ def update_invoice(
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param str invoice_id: Unique identifier for an Invoice (required)
         :param Invoices invoices: (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param int unitdp: e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -18465,8 +18465,8 @@ def update_item(
         xero_tenant_id,
         item_id,
         items,
-        idempotency_key=empty,
         unitdp=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -18476,8 +18476,8 @@ def update_item(
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param str item_id: Unique identifier for an Item (required)
         :param Items items: (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param int unitdp: e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -18856,9 +18856,9 @@ def update_or_create_bank_transactions(
         self,
         xero_tenant_id,
         bank_transactions,
-        idempotency_key=empty,
         summarize_errors=empty,
         unitdp=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -18867,9 +18867,9 @@ def update_or_create_bank_transactions(
         OAuth2 scope: accounting.transactions
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param BankTransactions bank_transactions: (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
         :param int unitdp: e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -18952,8 +18952,8 @@ def update_or_create_contacts(
         self,
         xero_tenant_id,
         contacts,
-        idempotency_key=empty,
         summarize_errors=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -18962,8 +18962,8 @@ def update_or_create_contacts(
         OAuth2 scope: accounting.contacts
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param Contacts contacts: (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -19041,9 +19041,9 @@ def update_or_create_credit_notes(
         self,
         xero_tenant_id,
         credit_notes,
-        idempotency_key=empty,
         summarize_errors=empty,
         unitdp=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -19052,9 +19052,9 @@ def update_or_create_credit_notes(
         OAuth2 scope: accounting.transactions
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param CreditNotes credit_notes: an array of Credit Notes with a single CreditNote object. (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
         :param int unitdp: e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -19137,8 +19137,8 @@ def update_or_create_employees(
         self,
         xero_tenant_id,
         employees,
-        idempotency_key=empty,
         summarize_errors=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -19147,8 +19147,8 @@ def update_or_create_employees(
         OAuth2 scope: accounting.settings
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param Employees employees: Employees with array of Employee object in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -19226,9 +19226,9 @@ def update_or_create_invoices(
         self,
         xero_tenant_id,
         invoices,
-        idempotency_key=empty,
         summarize_errors=empty,
         unitdp=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -19237,9 +19237,9 @@ def update_or_create_invoices(
         OAuth2 scope: accounting.transactions
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param Invoices invoices: (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
         :param int unitdp: e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -19320,9 +19320,9 @@ def update_or_create_items(
         self,
         xero_tenant_id,
         items,
-        idempotency_key=empty,
         summarize_errors=empty,
         unitdp=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -19331,9 +19331,9 @@ def update_or_create_items(
         OAuth2 scope: accounting.settings
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param Items items: (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
         :param int unitdp: e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -19414,8 +19414,8 @@ def update_or_create_manual_journals(
         self,
         xero_tenant_id,
         manual_journals,
-        idempotency_key=empty,
         summarize_errors=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -19424,8 +19424,8 @@ def update_or_create_manual_journals(
         OAuth2 scope: accounting.transactions
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param ManualJournals manual_journals: ManualJournals array with ManualJournal object in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -19505,8 +19505,8 @@ def update_or_create_purchase_orders(
         self,
         xero_tenant_id,
         purchase_orders,
-        idempotency_key=empty,
         summarize_errors=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -19515,8 +19515,8 @@ def update_or_create_purchase_orders(
         OAuth2 scope: accounting.transactions
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param PurchaseOrders purchase_orders: (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -19596,8 +19596,8 @@ def update_or_create_quotes(
         self,
         xero_tenant_id,
         quotes,
-        idempotency_key=empty,
         summarize_errors=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -19606,8 +19606,8 @@ def update_or_create_quotes(
         OAuth2 scope: accounting.transactions
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param Quotes quotes: (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -19685,8 +19685,8 @@ def update_or_create_repeating_invoices(
         self,
         xero_tenant_id,
         repeating_invoices,
-        idempotency_key=empty,
         summarize_errors=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -19695,8 +19695,8 @@ def update_or_create_repeating_invoices(
         OAuth2 scope: accounting.transactions
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param RepeatingInvoices repeating_invoices: RepeatingInvoices with an array of repeating invoice objects in body of request (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool summarize_errors: If false return 200 OK and mix of successfully created objects and any with validation errors
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -20176,8 +20176,8 @@ def update_receipt(
         xero_tenant_id,
         receipt_id,
         receipts,
-        idempotency_key=empty,
         unitdp=empty,
+        idempotency_key=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -20187,8 +20187,8 @@ def update_receipt(
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param str receipt_id: Unique identifier for a Receipt (required)
         :param Receipts receipts: (required)
-        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param int unitdp: e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts
+        :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
diff --git a/xero_python/accounting/docs/AccountingApi.md b/xero_python/accounting/docs/AccountingApi.md
index 52194ac4..96eb2cc9 100644
--- a/xero_python/accounting/docs/AccountingApi.md
+++ b/xero_python/accounting/docs/AccountingApi.md
@@ -513,7 +513,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_bank_transactions**
-> BankTransactions create_bank_transactions(xero_tenant_id, bank_transactions, idempotency_key=idempotency_key, summarize_errors=summarize_errors, unitdp=unitdp)
+> BankTransactions create_bank_transactions(xero_tenant_id, bank_transactions, summarize_errors=summarize_errors, unitdp=unitdp, idempotency_key=idempotency_key)
 
 Creates one or more spent or received money transaction
 
@@ -545,12 +545,12 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 bank_transactions = { bankTransactions: [{ type: BankTransaction.TypeEnum.SPEND, contact: { contactID: "00000000-0000-0000-0000-000000000000" }, lineItems: [{ description: "Foobar", quantity: 1.0, unitAmount: 20.0, accountCode: "000" } ], bankAccount: { code: "000" }}]} # BankTransactions | BankTransactions with an array of BankTransaction objects in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
 unitdp = 4 # int | e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts (optional)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Creates one or more spent or received money transaction
-    api_response = api_instance.create_bank_transactions(xero_tenant_id, bank_transactions, idempotency_key=idempotency_key, summarize_errors=summarize_errors, unitdp=unitdp)
+    api_response = api_instance.create_bank_transactions(xero_tenant_id, bank_transactions, summarize_errors=summarize_errors, unitdp=unitdp, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->create_bank_transactions: %s\n" % e)
@@ -562,9 +562,9 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **bank_transactions** | [**BankTransactions**](BankTransactions.md)| BankTransactions with an array of BankTransaction objects in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
  **unitdp** | **int**| e.g. unitdp&#x3D;4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts | [optional] 
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -1250,7 +1250,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_contacts**
-> Contacts create_contacts(xero_tenant_id, contacts, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+> Contacts create_contacts(xero_tenant_id, contacts, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
 
 Creates multiple contacts (bulk) in a Xero organisation
 
@@ -1282,11 +1282,11 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 contacts = { "Contacts": [ { "ContactID": "3ff6d40c-af9a-40a3-89ce-3c1556a25591", "ContactStatus": "ACTIVE", "Name": "Foo9987", "EmailAddress": "sid32476@blah.com", "BankAccountDetails": "", "Addresses": [ { "AddressType": "STREET", "City": "", "Region": "", "PostalCode": "", "Country": "" }, { "AddressType": "POBOX", "City": "", "Region": "", "PostalCode": "", "Country": "" } ], "Phones": [ { "PhoneType": "DEFAULT", "PhoneNumber": "", "PhoneAreaCode": "", "PhoneCountryCode": "" }, { "PhoneType": "DDI", "PhoneNumber": "", "PhoneAreaCode": "", "PhoneCountryCode": "" }, { "PhoneType": "FAX", "PhoneNumber": "", "PhoneAreaCode": "", "PhoneCountryCode": "" }, { "PhoneType": "MOBILE", "PhoneNumber": "555-1212", "PhoneAreaCode": "415", "PhoneCountryCode": "" } ], "UpdatedDateUTC": "/Date(1551399321043+0000)/", "ContactGroups": [], "IsSupplier": false, "IsCustomer": false, "SalesTrackingCategories": [], "PurchasesTrackingCategories": [], "PaymentTerms": { "Bills": { "Day": 15, "Type": "OFCURRENTMONTH" }, "Sales": { "Day": 10, "Type": "DAYSAFTERBILLMONTH" } }, "ContactPersons": [] } ] } # Contacts | Contacts with an array of Contact objects to create in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Creates multiple contacts (bulk) in a Xero organisation
-    api_response = api_instance.create_contacts(xero_tenant_id, contacts, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+    api_response = api_instance.create_contacts(xero_tenant_id, contacts, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->create_contacts: %s\n" % e)
@@ -1298,8 +1298,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **contacts** | [**Contacts**](Contacts.md)| Contacts with an array of Contact objects to create in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -1317,7 +1317,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_credit_note_allocation**
-> Allocations create_credit_note_allocation(xero_tenant_id, credit_note_id, allocations, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+> Allocations create_credit_note_allocation(xero_tenant_id, credit_note_id, allocations, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
 
 Creates allocation for a specific credit note
 
@@ -1350,11 +1350,11 @@ api_instance = AccountingApi(api_client)
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 credit_note_id = '00000000-0000-0000-0000-000000000000' # str | Unique identifier for a Credit Note
 allocations = { "Allocations": [ { "Invoice": { "LineItems": [], "InvoiceID": "c45720a1-ade3-4a38-a064-d15489be6841" }, "Amount": 1, "Date": "2019-03-05" } ] } # Allocations | Allocations with array of Allocation object in body of request.
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Creates allocation for a specific credit note
-    api_response = api_instance.create_credit_note_allocation(xero_tenant_id, credit_note_id, allocations, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+    api_response = api_instance.create_credit_note_allocation(xero_tenant_id, credit_note_id, allocations, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->create_credit_note_allocation: %s\n" % e)
@@ -1367,8 +1367,8 @@ Name | Type | Description  | Notes
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **credit_note_id** | [**str**](.md)| Unique identifier for a Credit Note | 
  **allocations** | [**Allocations**](Allocations.md)| Allocations with array of Allocation object in body of request. | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -1386,7 +1386,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_credit_note_attachment_by_file_name**
-> Attachments create_credit_note_attachment_by_file_name(xero_tenant_id, credit_note_id, file_name, body, idempotency_key=idempotency_key, include_online=include_online)
+> Attachments create_credit_note_attachment_by_file_name(xero_tenant_id, credit_note_id, file_name, body, include_online=include_online, idempotency_key=idempotency_key)
 
 Creates an attachment for a specific credit note
 
@@ -1420,11 +1420,11 @@ xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 credit_note_id = '00000000-0000-0000-0000-000000000000' # str | Unique identifier for a Credit Note
 file_name = 'xero-dev.jpg' # str | Name of the attachment
 body = 'body_example' # str | Byte array of file in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 include_online = False # bool | Allows an attachment to be seen by the end customer within their online invoice (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Creates an attachment for a specific credit note
-    api_response = api_instance.create_credit_note_attachment_by_file_name(xero_tenant_id, credit_note_id, file_name, body, idempotency_key=idempotency_key, include_online=include_online)
+    api_response = api_instance.create_credit_note_attachment_by_file_name(xero_tenant_id, credit_note_id, file_name, body, include_online=include_online, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->create_credit_note_attachment_by_file_name: %s\n" % e)
@@ -1438,8 +1438,8 @@ Name | Type | Description  | Notes
  **credit_note_id** | [**str**](.md)| Unique identifier for a Credit Note | 
  **file_name** | **str**| Name of the attachment | 
  **body** | **str**| Byte array of file in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **include_online** | **bool**| Allows an attachment to be seen by the end customer within their online invoice | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -1524,7 +1524,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_credit_notes**
-> CreditNotes create_credit_notes(xero_tenant_id, credit_notes, idempotency_key=idempotency_key, summarize_errors=summarize_errors, unitdp=unitdp)
+> CreditNotes create_credit_notes(xero_tenant_id, credit_notes, summarize_errors=summarize_errors, unitdp=unitdp, idempotency_key=idempotency_key)
 
 Creates a new credit note
 
@@ -1556,12 +1556,12 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 credit_notes = { "CreditNotes":[ { "Type":"ACCPAYCREDIT", "Contact":{ "ContactID":"430fa14a-f945-44d3-9f97-5df5e28441b8" }, "Date":"2019-01-05", "LineItems":[ { "Description":"Foobar", "Quantity":2.0, "UnitAmount":20.0, "AccountCode":"400" } ] } ] } # CreditNotes | Credit Notes with array of CreditNote object in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
 unitdp = 4 # int | e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts (optional)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Creates a new credit note
-    api_response = api_instance.create_credit_notes(xero_tenant_id, credit_notes, idempotency_key=idempotency_key, summarize_errors=summarize_errors, unitdp=unitdp)
+    api_response = api_instance.create_credit_notes(xero_tenant_id, credit_notes, summarize_errors=summarize_errors, unitdp=unitdp, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->create_credit_notes: %s\n" % e)
@@ -1573,9 +1573,9 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **credit_notes** | [**CreditNotes**](CreditNotes.md)| Credit Notes with array of CreditNote object in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
  **unitdp** | **int**| e.g. unitdp&#x3D;4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts | [optional] 
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -1658,7 +1658,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_employees**
-> Employees create_employees(xero_tenant_id, employees, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+> Employees create_employees(xero_tenant_id, employees, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
 
 Creates new employees used in Xero payrun
 
@@ -1690,11 +1690,11 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 employees = { "Employees": [ { "FirstName": "Nick", "LastName": "Fury", "ExternalLink": { "Url": "http://twitter.com/#!/search/Nick+Fury" } } ] } # Employees | Employees with array of Employee object in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Creates new employees used in Xero payrun
-    api_response = api_instance.create_employees(xero_tenant_id, employees, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+    api_response = api_instance.create_employees(xero_tenant_id, employees, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->create_employees: %s\n" % e)
@@ -1706,8 +1706,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **employees** | [**Employees**](Employees.md)| Employees with array of Employee object in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -1857,7 +1857,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_invoice_attachment_by_file_name**
-> Attachments create_invoice_attachment_by_file_name(xero_tenant_id, invoice_id, file_name, body, idempotency_key=idempotency_key, include_online=include_online)
+> Attachments create_invoice_attachment_by_file_name(xero_tenant_id, invoice_id, file_name, body, include_online=include_online, idempotency_key=idempotency_key)
 
 Creates an attachment for a specific invoice or purchase bill by filename
 
@@ -1891,11 +1891,11 @@ xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 invoice_id = '00000000-0000-0000-0000-000000000000' # str | Unique identifier for an Invoice
 file_name = 'xero-dev.jpg' # str | Name of the attachment
 body = 'body_example' # str | Byte array of file in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 include_online = False # bool | Allows an attachment to be seen by the end customer within their online invoice (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Creates an attachment for a specific invoice or purchase bill by filename
-    api_response = api_instance.create_invoice_attachment_by_file_name(xero_tenant_id, invoice_id, file_name, body, idempotency_key=idempotency_key, include_online=include_online)
+    api_response = api_instance.create_invoice_attachment_by_file_name(xero_tenant_id, invoice_id, file_name, body, include_online=include_online, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->create_invoice_attachment_by_file_name: %s\n" % e)
@@ -1909,8 +1909,8 @@ Name | Type | Description  | Notes
  **invoice_id** | [**str**](.md)| Unique identifier for an Invoice | 
  **file_name** | **str**| Name of the attachment | 
  **body** | **str**| Byte array of file in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **include_online** | **bool**| Allows an attachment to be seen by the end customer within their online invoice | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -1995,7 +1995,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_invoices**
-> Invoices create_invoices(xero_tenant_id, invoices, idempotency_key=idempotency_key, summarize_errors=summarize_errors, unitdp=unitdp)
+> Invoices create_invoices(xero_tenant_id, invoices, summarize_errors=summarize_errors, unitdp=unitdp, idempotency_key=idempotency_key)
 
 Creates one or more sales invoices or purchase bills
 
@@ -2027,12 +2027,12 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 invoices = { "Invoices": [ { "Type": "ACCREC", "Contact": { "ContactID": "430fa14a-f945-44d3-9f97-5df5e28441b8" }, "LineItems": [ { "Description": "Acme Tires", "Quantity": 2, "UnitAmount": 20, "AccountCode": "200", "TaxType": "NONE", "LineAmount": 40 } ], "Date": "2019-03-11", "DueDate": "2018-12-10", "Reference": "Website Design", "Status": "AUTHORISED" } ] } # Invoices | Invoices with an array of invoice objects in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
 unitdp = 4 # int | e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts (optional)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Creates one or more sales invoices or purchase bills
-    api_response = api_instance.create_invoices(xero_tenant_id, invoices, idempotency_key=idempotency_key, summarize_errors=summarize_errors, unitdp=unitdp)
+    api_response = api_instance.create_invoices(xero_tenant_id, invoices, summarize_errors=summarize_errors, unitdp=unitdp, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->create_invoices: %s\n" % e)
@@ -2044,9 +2044,9 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **invoices** | [**Invoices**](Invoices.md)| Invoices with an array of invoice objects in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
  **unitdp** | **int**| e.g. unitdp&#x3D;4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts | [optional] 
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -2131,7 +2131,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_items**
-> Items create_items(xero_tenant_id, items, idempotency_key=idempotency_key, summarize_errors=summarize_errors, unitdp=unitdp)
+> Items create_items(xero_tenant_id, items, summarize_errors=summarize_errors, unitdp=unitdp, idempotency_key=idempotency_key)
 
 Creates one or more items
 
@@ -2163,12 +2163,12 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 items = { "Items": [ { "Code": "code123", "Name": "Item Name XYZ", "Description": "Foobar", "InventoryAssetAccountCode": "140", "PurchaseDetails": { "COGSAccountCode": "500" } } ] } # Items | Items with an array of Item objects in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
 unitdp = 4 # int | e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts (optional)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Creates one or more items
-    api_response = api_instance.create_items(xero_tenant_id, items, idempotency_key=idempotency_key, summarize_errors=summarize_errors, unitdp=unitdp)
+    api_response = api_instance.create_items(xero_tenant_id, items, summarize_errors=summarize_errors, unitdp=unitdp, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->create_items: %s\n" % e)
@@ -2180,9 +2180,9 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **items** | [**Items**](Items.md)| Items with an array of Item objects in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
  **unitdp** | **int**| e.g. unitdp&#x3D;4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts | [optional] 
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -2401,7 +2401,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_manual_journals**
-> ManualJournals create_manual_journals(xero_tenant_id, manual_journals, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+> ManualJournals create_manual_journals(xero_tenant_id, manual_journals, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
 
 Creates one or more manual journals
 
@@ -2433,11 +2433,11 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 manual_journals = { "ManualJournals": [ { "Narration": "Journal Desc", "JournalLines": [ { "LineAmount": 100, "AccountCode": "400", "Description": "Money Movement" }, { "LineAmount": -100, "AccountCode": "400", "Description": "Prepayment of things", "Tracking": [ { "Name": "North", "Option": "Region" } ] } ], "Date": "2019-03-14" } ] } # ManualJournals | ManualJournals array with ManualJournal object in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Creates one or more manual journals
-    api_response = api_instance.create_manual_journals(xero_tenant_id, manual_journals, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+    api_response = api_instance.create_manual_journals(xero_tenant_id, manual_journals, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->create_manual_journals: %s\n" % e)
@@ -2449,8 +2449,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **manual_journals** | [**ManualJournals**](ManualJournals.md)| ManualJournals array with ManualJournal object in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -2468,7 +2468,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_overpayment_allocations**
-> Allocations create_overpayment_allocations(xero_tenant_id, overpayment_id, allocations, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+> Allocations create_overpayment_allocations(xero_tenant_id, overpayment_id, allocations, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
 
 Creates a single allocation for a specific overpayment
 
@@ -2501,11 +2501,11 @@ api_instance = AccountingApi(api_client)
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 overpayment_id = '00000000-0000-0000-0000-000000000000' # str | Unique identifier for a Overpayment
 allocations = { "Allocations": [ { "Invoice": { "InvoiceID": "00000000-0000-0000-0000-000000000000", "LineItems": [], "Contact": {}, "Type": "ACCPAY" }, "Amount": 10.00, "Date": "2019-03-12" } ] } # Allocations | Allocations array with Allocation object in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Creates a single allocation for a specific overpayment
-    api_response = api_instance.create_overpayment_allocations(xero_tenant_id, overpayment_id, allocations, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+    api_response = api_instance.create_overpayment_allocations(xero_tenant_id, overpayment_id, allocations, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->create_overpayment_allocations: %s\n" % e)
@@ -2518,8 +2518,8 @@ Name | Type | Description  | Notes
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **overpayment_id** | [**str**](.md)| Unique identifier for a Overpayment | 
  **allocations** | [**Allocations**](Allocations.md)| Allocations array with Allocation object in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -2801,7 +2801,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_payments**
-> Payments create_payments(xero_tenant_id, payments, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+> Payments create_payments(xero_tenant_id, payments, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
 
 Creates multiple payments for invoices or credit notes
 
@@ -2833,11 +2833,11 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 payments = { "Payments": [ { "Invoice": { "LineItems": [], "InvoiceID": "00000000-0000-0000-0000-000000000000" }, "Account": { "Code": "970" }, "Date": "2019-03-12", "Amount": 1 } ] } # Payments | Payments array with Payment object in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Creates multiple payments for invoices or credit notes
-    api_response = api_instance.create_payments(xero_tenant_id, payments, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+    api_response = api_instance.create_payments(xero_tenant_id, payments, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->create_payments: %s\n" % e)
@@ -2849,8 +2849,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **payments** | [**Payments**](Payments.md)| Payments array with Payment object in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -2868,7 +2868,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_prepayment_allocations**
-> Allocations create_prepayment_allocations(xero_tenant_id, prepayment_id, allocations, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+> Allocations create_prepayment_allocations(xero_tenant_id, prepayment_id, allocations, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
 
 Allows you to create an Allocation for prepayments
 
@@ -2901,11 +2901,11 @@ api_instance = AccountingApi(api_client)
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 prepayment_id = '00000000-0000-0000-0000-000000000000' # str | Unique identifier for a PrePayment
 allocations = { "Allocations": [ { "Invoice": { "LineItems": [], "InvoiceID": "00000000-0000-0000-0000-000000000000" }, "Amount": 1, "Date": "2019-01-10" } ] } # Allocations | Allocations with an array of Allocation object in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Allows you to create an Allocation for prepayments
-    api_response = api_instance.create_prepayment_allocations(xero_tenant_id, prepayment_id, allocations, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+    api_response = api_instance.create_prepayment_allocations(xero_tenant_id, prepayment_id, allocations, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->create_prepayment_allocations: %s\n" % e)
@@ -2918,8 +2918,8 @@ Name | Type | Description  | Notes
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **prepayment_id** | [**str**](.md)| Unique identifier for a PrePayment | 
  **allocations** | [**Allocations**](Allocations.md)| Allocations with an array of Allocation object in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -3140,7 +3140,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_purchase_orders**
-> PurchaseOrders create_purchase_orders(xero_tenant_id, purchase_orders, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+> PurchaseOrders create_purchase_orders(xero_tenant_id, purchase_orders, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
 
 Creates one or more purchase orders
 
@@ -3172,11 +3172,11 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 purchase_orders = { "PurchaseOrders": [ { "Contact": { "ContactID": "00000000-0000-0000-0000-000000000000" }, "LineItems": [ { "Description": "Foobar", "Quantity": 1, "UnitAmount": 20, "AccountCode": "710" } ], "Date": "2019-03-13" } ] } # PurchaseOrders | PurchaseOrders with an array of PurchaseOrder object in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Creates one or more purchase orders
-    api_response = api_instance.create_purchase_orders(xero_tenant_id, purchase_orders, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+    api_response = api_instance.create_purchase_orders(xero_tenant_id, purchase_orders, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->create_purchase_orders: %s\n" % e)
@@ -3188,8 +3188,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **purchase_orders** | [**PurchaseOrders**](PurchaseOrders.md)| PurchaseOrders with an array of PurchaseOrder object in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -3343,7 +3343,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_quotes**
-> Quotes create_quotes(xero_tenant_id, quotes, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+> Quotes create_quotes(xero_tenant_id, quotes, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
 
 Create one or more quotes
 
@@ -3375,11 +3375,11 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 quotes = { "Quotes": [ { "Contact": { "ContactID": "00000000-0000-0000-0000-000000000000" }, "LineItems": [ { "Description": "Foobar", "Quantity": 1, "UnitAmount": 20, "AccountCode": "12775" } ], "Date": "2020-02-01" } ] } # Quotes | Quotes with an array of Quote object in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Create one or more quotes
-    api_response = api_instance.create_quotes(xero_tenant_id, quotes, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+    api_response = api_instance.create_quotes(xero_tenant_id, quotes, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->create_quotes: %s\n" % e)
@@ -3391,8 +3391,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **quotes** | [**Quotes**](Quotes.md)| Quotes with an array of Quote object in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -3410,7 +3410,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_receipt**
-> Receipts create_receipt(xero_tenant_id, receipts, idempotency_key=idempotency_key, unitdp=unitdp)
+> Receipts create_receipt(xero_tenant_id, receipts, unitdp=unitdp, idempotency_key=idempotency_key)
 
 Creates draft expense claim receipts for any user
 
@@ -3442,11 +3442,11 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 receipts = { "Receipts": [ { "Contact": { "ContactID": "00000000-0000-0000-0000-000000000000" }, "Lineitems": [ { "Description": "Foobar", "Quantity": 2, "UnitAmount": 20, "AccountCode": "400", "TaxType": "NONE", "LineAmount": 40 } ], "User": { "UserID": "00000000-0000-0000-0000-000000000000" }, "LineAmountTypes": "NoTax", "Status": "DRAFT" } ] } # Receipts | Receipts with an array of Receipt object in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 unitdp = 4 # int | e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts (optional)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Creates draft expense claim receipts for any user
-    api_response = api_instance.create_receipt(xero_tenant_id, receipts, idempotency_key=idempotency_key, unitdp=unitdp)
+    api_response = api_instance.create_receipt(xero_tenant_id, receipts, unitdp=unitdp, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->create_receipt: %s\n" % e)
@@ -3458,8 +3458,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **receipts** | [**Receipts**](Receipts.md)| Receipts with an array of Receipt object in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **unitdp** | **int**| e.g. unitdp&#x3D;4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts | [optional] 
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -3749,7 +3749,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_repeating_invoices**
-> RepeatingInvoices create_repeating_invoices(xero_tenant_id, repeating_invoices, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+> RepeatingInvoices create_repeating_invoices(xero_tenant_id, repeating_invoices, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
 
 Creates one or more repeating invoice templates
 
@@ -3781,11 +3781,11 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 repeating_invoices = { "RepeatingInvoices": [ { "Schedule": { "Period": 1, "Unit": "MONTHLY", "DueDate": 10, "DueDateType": "OFFOLLOWINGMONTH", "StartDate": "\/Date(1555286400000+0000)\/" }, "Type": "ACCREC", "Reference": "[Week]", "ApprovedForSending": false, "SendCopy": false, "MarkAsSent": false, "IncludePDF": false, "Contact": { "ContactID": "430fa14a-f945-44d3-9f97-5df5e28441b8", "Name": "Liam Gallagher" }, "Status": "AUTHORISED", "LineAmountTypes": "Exclusive", "LineItems": [ { "Description": "Guitars Fender Strat", "UnitAmount": 5000.00, "TaxType": "OUTPUT2", "TaxAmount": 750.00, "LineAmount": 5000.00, "AccountCode": "200", "Tracking": [], "Quantity": 1.0000, "LineItemID": "13a8353c-d2af-4d5b-920c-438449f08900", "DiscountEnteredAsPercent": true } ], "CurrencyCode": "NZD" } ] } # RepeatingInvoices | RepeatingInvoices with an array of repeating invoice objects in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Creates one or more repeating invoice templates
-    api_response = api_instance.create_repeating_invoices(xero_tenant_id, repeating_invoices, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+    api_response = api_instance.create_repeating_invoices(xero_tenant_id, repeating_invoices, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->create_repeating_invoices: %s\n" % e)
@@ -3797,8 +3797,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **repeating_invoices** | [**RepeatingInvoices**](RepeatingInvoices.md)| RepeatingInvoices with an array of repeating invoice objects in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -13432,7 +13432,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_bank_transaction**
-> BankTransactions update_bank_transaction(xero_tenant_id, bank_transaction_id, bank_transactions, idempotency_key=idempotency_key, unitdp=unitdp)
+> BankTransactions update_bank_transaction(xero_tenant_id, bank_transaction_id, bank_transactions, unitdp=unitdp, idempotency_key=idempotency_key)
 
 Updates a single spent or received money transaction
 
@@ -13465,11 +13465,11 @@ api_instance = AccountingApi(api_client)
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 bank_transaction_id = '00000000-0000-0000-0000-000000000000' # str | Xero generated unique identifier for a bank transaction
 bank_transactions = { "BankTransactions": [ { "Type": "SPEND", "Contact": { "ContactID": "00000000-0000-0000-0000-000000000000", "ContactStatus": "ACTIVE", "Name": "Buzz Lightyear", "FirstName": "Buzz", "LastName": "Lightyear", "EmailAddress": "buzz.Lightyear@email.com", "ContactPersons": [], "BankAccountDetails": "", "Addresses": [ { "AddressType": "STREET", "City": "", "Region": "", "PostalCode": "", "Country": "" }, { "AddressType": "POBOX", "AddressLine1": "", "AddressLine2": "", "AddressLine3": "", "AddressLine4": "", "City": "Palo Alto", "Region": "CA", "PostalCode": "94020", "Country": "United States" } ], "Phones": [ { "PhoneType": "DEFAULT", "PhoneNumber": "847-1294", "PhoneAreaCode": "(626)", "PhoneCountryCode": "" }, { "PhoneType": "DDI", "PhoneNumber": "", "PhoneAreaCode": "", "PhoneCountryCode": "" }, { "PhoneType": "FAX", "PhoneNumber": "", "PhoneAreaCode": "", "PhoneCountryCode": "" }, { "PhoneType": "MOBILE", "PhoneNumber": "", "PhoneAreaCode": "", "PhoneCountryCode": "" } ], "UpdatedDateUTC": "2017-08-21T13:49:04.227-07:00", "ContactGroups": [] }, "Lineitems": [], "BankAccount": { "Code": "088", "Name": "Business Wells Fargo", "AccountID": "00000000-0000-0000-0000-000000000000" }, "IsReconciled": false, "Date": "2019-02-25", "Reference": "You just updated", "CurrencyCode": "USD", "CurrencyRate": 1, "Status": "AUTHORISED", "LineAmountTypes": "Inclusive", "TotalTax": 1.74, "BankTransactionID": "00000000-0000-0000-0000-000000000000", "UpdatedDateUTC": "2019-02-26T12:39:27.813-08:00" } ] } # BankTransactions | 
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 unitdp = 4 # int | e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts (optional)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Updates a single spent or received money transaction
-    api_response = api_instance.update_bank_transaction(xero_tenant_id, bank_transaction_id, bank_transactions, idempotency_key=idempotency_key, unitdp=unitdp)
+    api_response = api_instance.update_bank_transaction(xero_tenant_id, bank_transaction_id, bank_transactions, unitdp=unitdp, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->update_bank_transaction: %s\n" % e)
@@ -13482,8 +13482,8 @@ Name | Type | Description  | Notes
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **bank_transaction_id** | [**str**](.md)| Xero generated unique identifier for a bank transaction | 
  **bank_transactions** | [**BankTransactions**](BankTransactions.md)|  | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **unitdp** | **int**| e.g. unitdp&#x3D;4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts | [optional] 
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -13840,7 +13840,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_credit_note**
-> CreditNotes update_credit_note(xero_tenant_id, credit_note_id, credit_notes, idempotency_key=idempotency_key, unitdp=unitdp)
+> CreditNotes update_credit_note(xero_tenant_id, credit_note_id, credit_notes, unitdp=unitdp, idempotency_key=idempotency_key)
 
 Updates a specific credit note
 
@@ -13873,11 +13873,11 @@ api_instance = AccountingApi(api_client)
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 credit_note_id = '00000000-0000-0000-0000-000000000000' # str | Unique identifier for a Credit Note
 credit_notes = { "CreditNotes": [ { "Type": "ACCPAYCREDIT", "Contact": { "ContactID": "430fa14a-f945-44d3-9f97-5df5e28441b8" }, "Date": "2019-01-05", "Status": "AUTHORISED", "Reference": "HelloWorld", "LineItems": [ { "Description": "Foobar", "Quantity": 2, "UnitAmount": 20, "AccountCode": "400" } ] } ] } # CreditNotes | an array of Credit Notes containing credit note details to update
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 unitdp = 4 # int | e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts (optional)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Updates a specific credit note
-    api_response = api_instance.update_credit_note(xero_tenant_id, credit_note_id, credit_notes, idempotency_key=idempotency_key, unitdp=unitdp)
+    api_response = api_instance.update_credit_note(xero_tenant_id, credit_note_id, credit_notes, unitdp=unitdp, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->update_credit_note: %s\n" % e)
@@ -13890,8 +13890,8 @@ Name | Type | Description  | Notes
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **credit_note_id** | [**str**](.md)| Unique identifier for a Credit Note | 
  **credit_notes** | [**CreditNotes**](CreditNotes.md)| an array of Credit Notes containing credit note details to update | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **unitdp** | **int**| e.g. unitdp&#x3D;4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts | [optional] 
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -14045,7 +14045,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_invoice**
-> Invoices update_invoice(xero_tenant_id, invoice_id, invoices, idempotency_key=idempotency_key, unitdp=unitdp)
+> Invoices update_invoice(xero_tenant_id, invoice_id, invoices, unitdp=unitdp, idempotency_key=idempotency_key)
 
 Updates a specific sales invoices or purchase bills
 
@@ -14078,11 +14078,11 @@ api_instance = AccountingApi(api_client)
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 invoice_id = '00000000-0000-0000-0000-000000000000' # str | Unique identifier for an Invoice
 invoices = { "Invoices": [{ Reference: "May the force be with you", "InvoiceID": "00000000-0000-0000-0000-000000000000", "LineItems": [], "Contact": {}, "Type": "ACCPAY" }]} # Invoices | 
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 unitdp = 4 # int | e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts (optional)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Updates a specific sales invoices or purchase bills
-    api_response = api_instance.update_invoice(xero_tenant_id, invoice_id, invoices, idempotency_key=idempotency_key, unitdp=unitdp)
+    api_response = api_instance.update_invoice(xero_tenant_id, invoice_id, invoices, unitdp=unitdp, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->update_invoice: %s\n" % e)
@@ -14095,8 +14095,8 @@ Name | Type | Description  | Notes
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **invoice_id** | [**str**](.md)| Unique identifier for an Invoice | 
  **invoices** | [**Invoices**](Invoices.md)|  | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **unitdp** | **int**| e.g. unitdp&#x3D;4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts | [optional] 
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -14183,7 +14183,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_item**
-> Items update_item(xero_tenant_id, item_id, items, idempotency_key=idempotency_key, unitdp=unitdp)
+> Items update_item(xero_tenant_id, item_id, items, unitdp=unitdp, idempotency_key=idempotency_key)
 
 Updates a specific item
 
@@ -14216,11 +14216,11 @@ api_instance = AccountingApi(api_client)
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 item_id = '00000000-0000-0000-0000-000000000000' # str | Unique identifier for an Item
 items = { "Items": [ { "Code": "ItemCode123", "Description": "Description 123" } ] } # Items | 
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 unitdp = 4 # int | e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts (optional)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Updates a specific item
-    api_response = api_instance.update_item(xero_tenant_id, item_id, items, idempotency_key=idempotency_key, unitdp=unitdp)
+    api_response = api_instance.update_item(xero_tenant_id, item_id, items, unitdp=unitdp, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->update_item: %s\n" % e)
@@ -14233,8 +14233,8 @@ Name | Type | Description  | Notes
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **item_id** | [**str**](.md)| Unique identifier for an Item | 
  **items** | [**Items**](Items.md)|  | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **unitdp** | **int**| e.g. unitdp&#x3D;4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts | [optional] 
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -14455,7 +14455,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_or_create_bank_transactions**
-> BankTransactions update_or_create_bank_transactions(xero_tenant_id, bank_transactions, idempotency_key=idempotency_key, summarize_errors=summarize_errors, unitdp=unitdp)
+> BankTransactions update_or_create_bank_transactions(xero_tenant_id, bank_transactions, summarize_errors=summarize_errors, unitdp=unitdp, idempotency_key=idempotency_key)
 
 Updates or creates one or more spent or received money transaction
 
@@ -14487,12 +14487,12 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 bank_transactions = { "BankTransactions": [ { "Type": "SPEND", "Contact": { "ContactID": "00000000-0000-0000-0000-000000000000" }, "Lineitems": [ { "Description": "Foobar", "Quantity": 1, "UnitAmount": 20, "AccountCode": "400" } ], "BankAccount": { "Code": "088" } } ] } # BankTransactions | 
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
 unitdp = 4 # int | e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts (optional)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Updates or creates one or more spent or received money transaction
-    api_response = api_instance.update_or_create_bank_transactions(xero_tenant_id, bank_transactions, idempotency_key=idempotency_key, summarize_errors=summarize_errors, unitdp=unitdp)
+    api_response = api_instance.update_or_create_bank_transactions(xero_tenant_id, bank_transactions, summarize_errors=summarize_errors, unitdp=unitdp, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->update_or_create_bank_transactions: %s\n" % e)
@@ -14504,9 +14504,9 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **bank_transactions** | [**BankTransactions**](BankTransactions.md)|  | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
  **unitdp** | **int**| e.g. unitdp&#x3D;4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts | [optional] 
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -14524,7 +14524,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_or_create_contacts**
-> Contacts update_or_create_contacts(xero_tenant_id, contacts, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+> Contacts update_or_create_contacts(xero_tenant_id, contacts, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
 
 Updates or creates one or more contacts in a Xero organisation
 
@@ -14556,11 +14556,11 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 contacts = { "Contacts": [ { "Name": "Bruce Banner", "EmailAddress": "hulk@avengers.com", "Phones": [ { "PhoneType": "MOBILE", "PhoneNumber": "555-1212", "PhoneAreaCode": "415" } ], "PaymentTerms": { "Bills": { "Day": 15, "Type": "OFCURRENTMONTH" }, "Sales": { "Day": 10, "Type": "DAYSAFTERBILLMONTH" } } } ] } # Contacts | 
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Updates or creates one or more contacts in a Xero organisation
-    api_response = api_instance.update_or_create_contacts(xero_tenant_id, contacts, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+    api_response = api_instance.update_or_create_contacts(xero_tenant_id, contacts, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->update_or_create_contacts: %s\n" % e)
@@ -14572,8 +14572,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **contacts** | [**Contacts**](Contacts.md)|  | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -14591,7 +14591,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_or_create_credit_notes**
-> CreditNotes update_or_create_credit_notes(xero_tenant_id, credit_notes, idempotency_key=idempotency_key, summarize_errors=summarize_errors, unitdp=unitdp)
+> CreditNotes update_or_create_credit_notes(xero_tenant_id, credit_notes, summarize_errors=summarize_errors, unitdp=unitdp, idempotency_key=idempotency_key)
 
 Updates or creates one or more credit notes
 
@@ -14623,12 +14623,12 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 credit_notes = { "CreditNotes":[ { "Type":"ACCPAYCREDIT", "Contact":{ "ContactID":"430fa14a-f945-44d3-9f97-5df5e28441b8" }, "Date":"2019-01-05", "Status":"AUTHORISED", "Reference": "HelloWorld", "LineItems":[ { "Description":"Foobar", "Quantity":2.0, "UnitAmount":20.0, "AccountCode":"400" } ] } ] } # CreditNotes | an array of Credit Notes with a single CreditNote object.
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
 unitdp = 4 # int | e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts (optional)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Updates or creates one or more credit notes
-    api_response = api_instance.update_or_create_credit_notes(xero_tenant_id, credit_notes, idempotency_key=idempotency_key, summarize_errors=summarize_errors, unitdp=unitdp)
+    api_response = api_instance.update_or_create_credit_notes(xero_tenant_id, credit_notes, summarize_errors=summarize_errors, unitdp=unitdp, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->update_or_create_credit_notes: %s\n" % e)
@@ -14640,9 +14640,9 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **credit_notes** | [**CreditNotes**](CreditNotes.md)| an array of Credit Notes with a single CreditNote object. | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
  **unitdp** | **int**| e.g. unitdp&#x3D;4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts | [optional] 
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -14660,7 +14660,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_or_create_employees**
-> Employees update_or_create_employees(xero_tenant_id, employees, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+> Employees update_or_create_employees(xero_tenant_id, employees, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
 
 Creates a single new employees used in Xero payrun
 
@@ -14692,11 +14692,11 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 employees = { "Employees": [ { "FirstName": "Nick", "LastName": "Fury", "ExternalLink": { "Url": "http://twitter.com/#!/search/Nick+Fury" } } ] } # Employees | Employees with array of Employee object in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Creates a single new employees used in Xero payrun
-    api_response = api_instance.update_or_create_employees(xero_tenant_id, employees, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+    api_response = api_instance.update_or_create_employees(xero_tenant_id, employees, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->update_or_create_employees: %s\n" % e)
@@ -14708,8 +14708,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **employees** | [**Employees**](Employees.md)| Employees with array of Employee object in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -14727,7 +14727,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_or_create_invoices**
-> Invoices update_or_create_invoices(xero_tenant_id, invoices, idempotency_key=idempotency_key, summarize_errors=summarize_errors, unitdp=unitdp)
+> Invoices update_or_create_invoices(xero_tenant_id, invoices, summarize_errors=summarize_errors, unitdp=unitdp, idempotency_key=idempotency_key)
 
 Updates or creates one or more sales invoices or purchase bills
 
@@ -14759,12 +14759,12 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 invoices = { "Invoices": [ { "Type": "ACCREC", "Contact": { "ContactID": "430fa14a-f945-44d3-9f97-5df5e28441b8" }, "LineItems": [ { "Description": "Acme Tires", "Quantity": 2, "UnitAmount": 20, "AccountCode": "200", "TaxType": "NONE", "LineAmount": 40 } ], "Date": "2019-03-11", "DueDate": "2018-12-10", "Reference": "Website Design", "Status": "AUTHORISED" } ] } # Invoices | 
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
 unitdp = 4 # int | e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts (optional)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Updates or creates one or more sales invoices or purchase bills
-    api_response = api_instance.update_or_create_invoices(xero_tenant_id, invoices, idempotency_key=idempotency_key, summarize_errors=summarize_errors, unitdp=unitdp)
+    api_response = api_instance.update_or_create_invoices(xero_tenant_id, invoices, summarize_errors=summarize_errors, unitdp=unitdp, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->update_or_create_invoices: %s\n" % e)
@@ -14776,9 +14776,9 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **invoices** | [**Invoices**](Invoices.md)|  | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
  **unitdp** | **int**| e.g. unitdp&#x3D;4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts | [optional] 
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -14796,7 +14796,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_or_create_items**
-> Items update_or_create_items(xero_tenant_id, items, idempotency_key=idempotency_key, summarize_errors=summarize_errors, unitdp=unitdp)
+> Items update_or_create_items(xero_tenant_id, items, summarize_errors=summarize_errors, unitdp=unitdp, idempotency_key=idempotency_key)
 
 Updates or creates one or more items
 
@@ -14828,12 +14828,12 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 items = { "Items": [ { "Code": "ItemCode123", "Name": "ItemName XYZ", "Description": "Item Description ABC" } ] } # Items | 
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
 unitdp = 4 # int | e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts (optional)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Updates or creates one or more items
-    api_response = api_instance.update_or_create_items(xero_tenant_id, items, idempotency_key=idempotency_key, summarize_errors=summarize_errors, unitdp=unitdp)
+    api_response = api_instance.update_or_create_items(xero_tenant_id, items, summarize_errors=summarize_errors, unitdp=unitdp, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->update_or_create_items: %s\n" % e)
@@ -14845,9 +14845,9 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **items** | [**Items**](Items.md)|  | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
  **unitdp** | **int**| e.g. unitdp&#x3D;4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts | [optional] 
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -14865,7 +14865,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_or_create_manual_journals**
-> ManualJournals update_or_create_manual_journals(xero_tenant_id, manual_journals, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+> ManualJournals update_or_create_manual_journals(xero_tenant_id, manual_journals, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
 
 Updates or creates a single manual journal
 
@@ -14897,11 +14897,11 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 manual_journals = { "ManualJournals": [ { "Narration": "Journal Desc", "JournalLines": [ { "LineAmount": 100, "AccountCode": "400", "Description": "Money Movement" }, { "LineAmount": -100, "AccountCode": "400", "Description": "Prepayment of things", "Tracking": [ { "Name": "North", "Option": "Region" } ] } ], "Date": "2019-03-14" } ] } # ManualJournals | ManualJournals array with ManualJournal object in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Updates or creates a single manual journal
-    api_response = api_instance.update_or_create_manual_journals(xero_tenant_id, manual_journals, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+    api_response = api_instance.update_or_create_manual_journals(xero_tenant_id, manual_journals, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->update_or_create_manual_journals: %s\n" % e)
@@ -14913,8 +14913,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **manual_journals** | [**ManualJournals**](ManualJournals.md)| ManualJournals array with ManualJournal object in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -14932,7 +14932,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_or_create_purchase_orders**
-> PurchaseOrders update_or_create_purchase_orders(xero_tenant_id, purchase_orders, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+> PurchaseOrders update_or_create_purchase_orders(xero_tenant_id, purchase_orders, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
 
 Updates or creates one or more purchase orders
 
@@ -14964,11 +14964,11 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 purchase_orders = { "PurchaseOrders": [ { "Contact": { "ContactID": "00000000-0000-0000-0000-000000000000" }, "LineItems": [ { "Description": "Foobar", "Quantity": 1, "UnitAmount": 20, "AccountCode": "710" } ], "Date": "2019-03-13" } ] } # PurchaseOrders | 
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Updates or creates one or more purchase orders
-    api_response = api_instance.update_or_create_purchase_orders(xero_tenant_id, purchase_orders, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+    api_response = api_instance.update_or_create_purchase_orders(xero_tenant_id, purchase_orders, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->update_or_create_purchase_orders: %s\n" % e)
@@ -14980,8 +14980,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **purchase_orders** | [**PurchaseOrders**](PurchaseOrders.md)|  | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -14999,7 +14999,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_or_create_quotes**
-> Quotes update_or_create_quotes(xero_tenant_id, quotes, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+> Quotes update_or_create_quotes(xero_tenant_id, quotes, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
 
 Updates or creates one or more quotes
 
@@ -15031,11 +15031,11 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 quotes = { "Quotes": [ { "Contact": { "ContactID": "00000000-0000-0000-0000-000000000000" }, "LineItems": [ { "Description": "Foobar", "Quantity": 1, "UnitAmount": 20, "AccountCode": "12775" } ], "Date": "2020-02-01" } ] } # Quotes | 
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Updates or creates one or more quotes
-    api_response = api_instance.update_or_create_quotes(xero_tenant_id, quotes, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+    api_response = api_instance.update_or_create_quotes(xero_tenant_id, quotes, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->update_or_create_quotes: %s\n" % e)
@@ -15047,8 +15047,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **quotes** | [**Quotes**](Quotes.md)|  | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -15066,7 +15066,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_or_create_repeating_invoices**
-> RepeatingInvoices update_or_create_repeating_invoices(xero_tenant_id, repeating_invoices, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+> RepeatingInvoices update_or_create_repeating_invoices(xero_tenant_id, repeating_invoices, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
 
 Creates or deletes one or more repeating invoice templates
 
@@ -15098,11 +15098,11 @@ api_instance = AccountingApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 repeating_invoices = { "RepeatingInvoices": [ { "Schedule": { "Period": 1, "Unit": "MONTHLY", "DueDate": 10, "DueDateType": "OFFOLLOWINGMONTH", "StartDate": "\/Date(1555286400000+0000)\/" }, "Type": "ACCREC", "Reference": "[Week]", "ApprovedForSending": false, "SendCopy": false, "MarkAsSent": false, "IncludePDF": false, "Contact": { "ContactID": "430fa14a-f945-44d3-9f97-5df5e28441b8", "Name": "Liam Gallagher" }, "Status": "AUTHORISED", "LineAmountTypes": "Exclusive", "LineItems": [ { "Description": "Guitars Fender Strat", "UnitAmount": 5000.00, "TaxType": "OUTPUT2", "TaxAmount": 750.00, "LineAmount": 5000.00, "AccountCode": "200", "Tracking": [], "Quantity": 1.0000, "LineItemID": "13a8353c-d2af-4d5b-920c-438449f08900", "DiscountEnteredAsPercent": true } ], "CurrencyCode": "NZD" } ] } # RepeatingInvoices | RepeatingInvoices with an array of repeating invoice objects in body of request
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 summarize_errors = False # bool | If false return 200 OK and mix of successfully created objects and any with validation errors (optional) (default to False)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Creates or deletes one or more repeating invoice templates
-    api_response = api_instance.update_or_create_repeating_invoices(xero_tenant_id, repeating_invoices, idempotency_key=idempotency_key, summarize_errors=summarize_errors)
+    api_response = api_instance.update_or_create_repeating_invoices(xero_tenant_id, repeating_invoices, summarize_errors=summarize_errors, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->update_or_create_repeating_invoices: %s\n" % e)
@@ -15114,8 +15114,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **repeating_invoices** | [**RepeatingInvoices**](RepeatingInvoices.md)| RepeatingInvoices with an array of repeating invoice objects in body of request | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **summarize_errors** | **bool**| If false return 200 OK and mix of successfully created objects and any with validation errors | [optional] [default to False]
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
@@ -15405,7 +15405,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_receipt**
-> Receipts update_receipt(xero_tenant_id, receipt_id, receipts, idempotency_key=idempotency_key, unitdp=unitdp)
+> Receipts update_receipt(xero_tenant_id, receipt_id, receipts, unitdp=unitdp, idempotency_key=idempotency_key)
 
 Updates a specific draft expense claim receipts
 
@@ -15438,11 +15438,11 @@ api_instance = AccountingApi(api_client)
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 receipt_id = '00000000-0000-0000-0000-000000000000' # str | Unique identifier for a Receipt
 receipts = { "Receipts": [ { "Lineitems": [], "User": { "UserID": "00000000-0000-0000-0000-000000000000" }, "Reference": "Foobar" } ] } # Receipts | 
-idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 unitdp = 4 # int | e.g. unitdp=4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts (optional)
+idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
 try:
     # Updates a specific draft expense claim receipts
-    api_response = api_instance.update_receipt(xero_tenant_id, receipt_id, receipts, idempotency_key=idempotency_key, unitdp=unitdp)
+    api_response = api_instance.update_receipt(xero_tenant_id, receipt_id, receipts, unitdp=unitdp, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AccountingApi->update_receipt: %s\n" % e)
@@ -15455,8 +15455,8 @@ Name | Type | Description  | Notes
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **receipt_id** | [**str**](.md)| Unique identifier for a Receipt | 
  **receipts** | [**Receipts**](Receipts.md)|  | 
- **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
  **unitdp** | **int**| e.g. unitdp&#x3D;4 – (Unit Decimal Places) You can opt in to use four decimal places for unit amounts | [optional] 
+ **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
 
 ### Return type
 
diff --git a/xero_python/appstore/api/app_store_api.py b/xero_python/appstore/api/app_store_api.py
index 1a54f710..0a77a15d 100644
--- a/xero_python/appstore/api/app_store_api.py
+++ b/xero_python/appstore/api/app_store_api.py
@@ -10,7 +10,7 @@
 """
 
 """
-    OpenAPI spec version: 2.40.3
+    OpenAPI spec version: 3.0.0
 """
 
 import importlib
diff --git a/xero_python/assets/api/asset_api.py b/xero_python/assets/api/asset_api.py
index 328debe7..df0b3522 100644
--- a/xero_python/assets/api/asset_api.py
+++ b/xero_python/assets/api/asset_api.py
@@ -10,7 +10,7 @@
 """
 
 """
-    OpenAPI spec version: 2.40.3
+    OpenAPI spec version: 3.0.0
 """
 
 import importlib
@@ -143,8 +143,8 @@ def create_asset(
     def create_asset_type(
         self,
         xero_tenant_id,
+        asset_type,
         idempotency_key=empty,
-        asset_type=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -153,8 +153,8 @@ def create_asset_type(
         OAuth2 scope: assets
         Adds an fixed asset type to the system  # noqa: E501
         :param str xero_tenant_id: Xero identifier for Tenant (required)
+        :param AssetType asset_type: Asset type to add (required)
         :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
-        :param AssetType asset_type: Asset type to add
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -167,6 +167,12 @@ def create_asset_type(
                 "Missing the required parameter `xero_tenant_id` "
                 "when calling `create_asset_type`"
             )
+        # verify the required parameter 'asset_type' is set
+        if asset_type is None:
+            raise ValueError(
+                "Missing the required parameter `asset_type` "
+                "when calling `create_asset_type`"
+            )
 
         collection_formats = {}
         path_params = {}
diff --git a/xero_python/assets/docs/AssetApi.md b/xero_python/assets/docs/AssetApi.md
index 9917be0a..c8d6ad37 100644
--- a/xero_python/assets/docs/AssetApi.md
+++ b/xero_python/assets/docs/AssetApi.md
@@ -80,7 +80,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_asset_type**
-> AssetType create_asset_type(xero_tenant_id, idempotency_key=idempotency_key, asset_type=asset_type)
+> AssetType create_asset_type(xero_tenant_id, asset_type, idempotency_key=idempotency_key)
 
 adds a fixed asset type
 
@@ -113,11 +113,11 @@ api_client = ApiClient(
 api_instance = AssetApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
+asset_type = { "assetTypeName":"Machinery11004", "fixedAssetAccountId":"3d8d063a-c148-4bb8-8b3c-a5e2ad3b1e82", "depreciationExpenseAccountId":"d1602f69-f900-4616-8d34-90af393fa368", "accumulatedDepreciationAccountId":"9195cadd-8645-41e6-9f67-7bcd421defe8", "bookDepreciationSetting":{ "depreciationMethod":"DiminishingValue100", "averagingMethod":"ActualDays", "depreciationRate":0.05, "depreciationCalculationMethod":"None" } } # AssetType | Asset type to add
 idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
-asset_type = { "assetTypeName":"Machinery11004", "fixedAssetAccountId":"3d8d063a-c148-4bb8-8b3c-a5e2ad3b1e82", "depreciationExpenseAccountId":"d1602f69-f900-4616-8d34-90af393fa368", "accumulatedDepreciationAccountId":"9195cadd-8645-41e6-9f67-7bcd421defe8", "bookDepreciationSetting":{ "depreciationMethod":"DiminishingValue100", "averagingMethod":"ActualDays", "depreciationRate":0.05, "depreciationCalculationMethod":"None" } } # AssetType | Asset type to add (optional)
 try:
     # adds a fixed asset type
-    api_response = api_instance.create_asset_type(xero_tenant_id, idempotency_key=idempotency_key, asset_type=asset_type)
+    api_response = api_instance.create_asset_type(xero_tenant_id, asset_type, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling AssetApi->create_asset_type: %s\n" % e)
@@ -128,8 +128,8 @@ except ApiException as e:
 Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
+ **asset_type** | [**AssetType**](AssetType.md)| Asset type to add | 
  **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
- **asset_type** | [**AssetType**](AssetType.md)| Asset type to add | [optional] 
 
 ### Return type
 
diff --git a/xero_python/docs/README.md b/xero_python/docs/README.md
index f50ffbc6..932cac2a 100644
--- a/xero_python/docs/README.md
+++ b/xero_python/docs/README.md
@@ -3,8 +3,8 @@ These endpoints are related to managing authentication tokens and identity for X
 
 The `xero_python` package is automatically generated by the [XeroAPI SDK 2.0 Codegen](https://github.com/xero-github/xeroapi-sdk-codegen) project:
 
-- API version: 2.40.3
-- Package version: 1.27.0
+- API version: 3.0.0
+- Package version: 2.0.0
 - Build package: org.openapitools.codegen.languages.PythonClientCodegen
 For more information, please visit [https://developer.xero.com](https://developer.xero.com)
 
diff --git a/xero_python/file/api/files_api.py b/xero_python/file/api/files_api.py
index 272a56cc..e2e2a276 100644
--- a/xero_python/file/api/files_api.py
+++ b/xero_python/file/api/files_api.py
@@ -10,7 +10,7 @@
 """
 
 """
-    OpenAPI spec version: 2.40.3
+    OpenAPI spec version: 3.0.0
 """
 
 import importlib
@@ -60,8 +60,8 @@ def create_file_association(
         self,
         xero_tenant_id,
         file_id,
+        association,
         idempotency_key=empty,
-        association=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -71,8 +71,8 @@ def create_file_association(
         By passing in the appropriate options, you can create a new folder  # noqa: E501
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param str file_id: File id for single object (required)
+        :param Association association: (required)
         :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
-        :param Association association:
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -91,6 +91,12 @@ def create_file_association(
                 "Missing the required parameter `file_id` "
                 "when calling `create_file_association`"
             )
+        # verify the required parameter 'association' is set
+        if association is None:
+            raise ValueError(
+                "Missing the required parameter `association` "
+                "when calling `create_file_association`"
+            )
 
         collection_formats = {}
         path_params = {
@@ -148,8 +154,8 @@ def create_file_association(
     def create_folder(
         self,
         xero_tenant_id,
+        folder,
         idempotency_key=empty,
-        folder=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -158,8 +164,8 @@ def create_folder(
         OAuth2 scope: files
         By passing in the appropriate properties, you can create a new folder  # noqa: E501
         :param str xero_tenant_id: Xero identifier for Tenant (required)
+        :param Folder folder: (required)
         :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
-        :param Folder folder:
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -172,6 +178,12 @@ def create_folder(
                 "Missing the required parameter `xero_tenant_id` "
                 "when calling `create_folder`"
             )
+        # verify the required parameter 'folder' is set
+        if folder is None:
+            raise ValueError(
+                "Missing the required parameter `folder` "
+                "when calling `create_folder`"
+            )
 
         collection_formats = {}
         path_params = {}
@@ -1182,8 +1194,8 @@ def update_file(
         self,
         xero_tenant_id,
         file_id,
+        file_object,
         idempotency_key=empty,
-        file_object=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -1193,8 +1205,8 @@ def update_file(
         Updates file properties of a single file  # noqa: E501
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param str file_id: File id for single object (required)
+        :param FileObject file_object: (required)
         :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
-        :param FileObject file_object:
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -1212,6 +1224,12 @@ def update_file(
             raise ValueError(
                 "Missing the required parameter `file_id` " "when calling `update_file`"
             )
+        # verify the required parameter 'file_object' is set
+        if file_object is None:
+            raise ValueError(
+                "Missing the required parameter `file_object` "
+                "when calling `update_file`"
+            )
 
         collection_formats = {}
         path_params = {
diff --git a/xero_python/file/docs/FilesApi.md b/xero_python/file/docs/FilesApi.md
index e0a1d854..d3eeee1f 100644
--- a/xero_python/file/docs/FilesApi.md
+++ b/xero_python/file/docs/FilesApi.md
@@ -25,7 +25,7 @@ Method | HTTP request | Description
 
 
 # **create_file_association**
-> Association create_file_association(xero_tenant_id, file_id, idempotency_key=idempotency_key, association=association)
+> Association create_file_association(xero_tenant_id, file_id, association, idempotency_key=idempotency_key)
 
 Creates a new file association
 
@@ -59,11 +59,11 @@ api_instance = FilesApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 file_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c' # str | File id for single object
+association = { "ObjectId": "1270bf7c-5d18-473a-9231-1e36c4bd33ed", "ObjectGroup": "Contact", "ObjectType": "Business" } # Association | 
 idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
-association = { "ObjectId": "1270bf7c-5d18-473a-9231-1e36c4bd33ed", "ObjectGroup": "Contact", "ObjectType": "Business" } # Association |  (optional)
 try:
     # Creates a new file association
-    api_response = api_instance.create_file_association(xero_tenant_id, file_id, idempotency_key=idempotency_key, association=association)
+    api_response = api_instance.create_file_association(xero_tenant_id, file_id, association, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling FilesApi->create_file_association: %s\n" % e)
@@ -75,8 +75,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **file_id** | [**str**](.md)| File id for single object | 
+ **association** | [**Association**](Association.md)|  | 
  **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
- **association** | [**Association**](Association.md)|  | [optional] 
 
 ### Return type
 
@@ -94,7 +94,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **create_folder**
-> Folder create_folder(xero_tenant_id, idempotency_key=idempotency_key, folder=folder)
+> Folder create_folder(xero_tenant_id, folder, idempotency_key=idempotency_key)
 
 Creates a new folder
 
@@ -127,11 +127,11 @@ api_client = ApiClient(
 api_instance = FilesApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
+folder = { "Name": "My Docs" } # Folder | 
 idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
-folder = { "Name": "My Docs" } # Folder |  (optional)
 try:
     # Creates a new folder
-    api_response = api_instance.create_folder(xero_tenant_id, idempotency_key=idempotency_key, folder=folder)
+    api_response = api_instance.create_folder(xero_tenant_id, folder, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling FilesApi->create_folder: %s\n" % e)
@@ -142,8 +142,8 @@ except ApiException as e:
 Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
+ **folder** | [**Folder**](Folder.md)|  | 
  **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
- **folder** | [**Folder**](Folder.md)|  | [optional] 
 
 ### Return type
 
@@ -946,7 +946,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_file**
-> FileObject update_file(xero_tenant_id, file_id, idempotency_key=idempotency_key, file_object=file_object)
+> FileObject update_file(xero_tenant_id, file_id, file_object, idempotency_key=idempotency_key)
 
 Update a file
 
@@ -980,11 +980,11 @@ api_instance = FilesApi(api_client)
 
 xero_tenant_id = 'YOUR_XERO_TENANT_ID' # str | Xero identifier for Tenant
 file_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c' # str | File id for single object
+file_object = { "FolderId": "bf924975-7097-46f2-a143-1ecfbab3c8c3" } # FileObject | 
 idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
-file_object = { "FolderId": "bf924975-7097-46f2-a143-1ecfbab3c8c3" } # FileObject |  (optional)
 try:
     # Update a file
-    api_response = api_instance.update_file(xero_tenant_id, file_id, idempotency_key=idempotency_key, file_object=file_object)
+    api_response = api_instance.update_file(xero_tenant_id, file_id, file_object, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling FilesApi->update_file: %s\n" % e)
@@ -996,8 +996,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **file_id** | [**str**](.md)| File id for single object | 
+ **file_object** | [**FileObject**](FileObject.md)|  | 
  **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
- **file_object** | [**FileObject**](FileObject.md)|  | [optional] 
 
 ### Return type
 
diff --git a/xero_python/finance/api/finance_api.py b/xero_python/finance/api/finance_api.py
index e2d596ab..54fe3fe6 100644
--- a/xero_python/finance/api/finance_api.py
+++ b/xero_python/finance/api/finance_api.py
@@ -10,7 +10,7 @@
 """
 
 """
-    OpenAPI spec version: 2.40.3
+    OpenAPI spec version: 3.0.0
 """
 
 import importlib
diff --git a/xero_python/identity/api/identity_api.py b/xero_python/identity/api/identity_api.py
index ceb22e17..949300a5 100644
--- a/xero_python/identity/api/identity_api.py
+++ b/xero_python/identity/api/identity_api.py
@@ -10,7 +10,7 @@
 """
 
 """
-    OpenAPI spec version: 2.40.3
+    OpenAPI spec version: 3.0.0
 """
 
 import importlib
diff --git a/xero_python/payrollau/api/payroll_au_api.py b/xero_python/payrollau/api/payroll_au_api.py
index 9914aa64..01c4e4e5 100644
--- a/xero_python/payrollau/api/payroll_au_api.py
+++ b/xero_python/payrollau/api/payroll_au_api.py
@@ -10,7 +10,7 @@
 """
 
 """
-    OpenAPI spec version: 2.40.3
+    OpenAPI spec version: 3.0.0
 """
 
 import importlib
@@ -2172,8 +2172,8 @@ def update_employee(
         self,
         xero_tenant_id,
         employee_id,
+        employee,
         idempotency_key=empty,
-        employee=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -2183,8 +2183,8 @@ def update_employee(
         Update properties on a single employee  # noqa: E501
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param str employee_id: Employee id for single object (required)
+        :param list[Employee] employee: (required)
         :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
-        :param list[Employee] employee:
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -2203,6 +2203,12 @@ def update_employee(
                 "Missing the required parameter `employee_id` "
                 "when calling `update_employee`"
             )
+        # verify the required parameter 'employee' is set
+        if employee is None:
+            raise ValueError(
+                "Missing the required parameter `employee` "
+                "when calling `update_employee`"
+            )
 
         collection_formats = {}
         path_params = {
@@ -2355,8 +2361,8 @@ def update_pay_run(
         self,
         xero_tenant_id,
         pay_run_id,
+        pay_run,
         idempotency_key=empty,
-        pay_run=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -2366,8 +2372,8 @@ def update_pay_run(
         Update properties on a single PayRun  # noqa: E501
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param str pay_run_id: PayRun id for single object (required)
+        :param list[PayRun] pay_run: (required)
         :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
-        :param list[PayRun] pay_run:
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -2386,6 +2392,12 @@ def update_pay_run(
                 "Missing the required parameter `pay_run_id` "
                 "when calling `update_pay_run`"
             )
+        # verify the required parameter 'pay_run' is set
+        if pay_run is None:
+            raise ValueError(
+                "Missing the required parameter `pay_run` "
+                "when calling `update_pay_run`"
+            )
 
         collection_formats = {}
         path_params = {
@@ -2444,8 +2456,8 @@ def update_payslip(
         self,
         xero_tenant_id,
         payslip_id,
+        payslip_lines,
         idempotency_key=empty,
-        payslip_lines=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -2455,8 +2467,8 @@ def update_payslip(
         Update lines on a single payslips  # noqa: E501
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param str payslip_id: Payslip id for single object (required)
+        :param list[PayslipLines] payslip_lines: (required)
         :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
-        :param list[PayslipLines] payslip_lines:
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -2475,6 +2487,12 @@ def update_payslip(
                 "Missing the required parameter `payslip_id` "
                 "when calling `update_payslip`"
             )
+        # verify the required parameter 'payslip_lines' is set
+        if payslip_lines is None:
+            raise ValueError(
+                "Missing the required parameter `payslip_lines` "
+                "when calling `update_payslip`"
+            )
 
         collection_formats = {}
         path_params = {
@@ -2533,8 +2551,8 @@ def update_superfund(
         self,
         xero_tenant_id,
         super_fund_id,
+        super_fund,
         idempotency_key=empty,
-        super_fund=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -2544,8 +2562,8 @@ def update_superfund(
         Update properties on a single Superfund  # noqa: E501
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param str super_fund_id: Superfund id for single object (required)
+        :param list[SuperFund] super_fund: (required)
         :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
-        :param list[SuperFund] super_fund:
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -2564,6 +2582,12 @@ def update_superfund(
                 "Missing the required parameter `super_fund_id` "
                 "when calling `update_superfund`"
             )
+        # verify the required parameter 'super_fund' is set
+        if super_fund is None:
+            raise ValueError(
+                "Missing the required parameter `super_fund` "
+                "when calling `update_superfund`"
+            )
 
         collection_formats = {}
         path_params = {
@@ -2622,8 +2646,8 @@ def update_timesheet(
         self,
         xero_tenant_id,
         timesheet_id,
+        timesheet,
         idempotency_key=empty,
-        timesheet=empty,
         _return_http_data_only=True,
         _preload_content=True,
         _request_timeout=None,
@@ -2633,8 +2657,8 @@ def update_timesheet(
         Update properties on a single timesheet  # noqa: E501
         :param str xero_tenant_id: Xero identifier for Tenant (required)
         :param str timesheet_id: Timesheet id for single object (required)
+        :param list[Timesheet] timesheet: (required)
         :param str idempotency_key: This allows you to safely retry requests without the risk of duplicate processing. 128 character max.
-        :param list[Timesheet] timesheet:
         :param bool _return_http_data_only: return received data only
         :param bool _preload_content: load received data in models
         :param bool _request_timeout: maximum wait time for response
@@ -2653,6 +2677,12 @@ def update_timesheet(
                 "Missing the required parameter `timesheet_id` "
                 "when calling `update_timesheet`"
             )
+        # verify the required parameter 'timesheet' is set
+        if timesheet is None:
+            raise ValueError(
+                "Missing the required parameter `timesheet` "
+                "when calling `update_timesheet`"
+            )
 
         collection_formats = {}
         path_params = {
diff --git a/xero_python/payrollau/docs/PayrollAuApi.md b/xero_python/payrollau/docs/PayrollAuApi.md
index 5c6c25ee..a71dc4d8 100644
--- a/xero_python/payrollau/docs/PayrollAuApi.md
+++ b/xero_python/payrollau/docs/PayrollAuApi.md
@@ -1743,7 +1743,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_employee**
-> Employees update_employee(xero_tenant_id, employee_id, idempotency_key=idempotency_key, employee=employee)
+> Employees update_employee(xero_tenant_id, employee_id, employee, idempotency_key=idempotency_key)
 
 Updates an employee's detail
 
@@ -1777,11 +1777,11 @@ api_instance = PayrollAuApi(api_client)
 
 xero_tenant_id = 'xero_tenant_id_example' # str | Xero identifier for Tenant
 employee_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c' # str | Employee id for single object
+employee = [ { "MiddleNames": "Frank" } ] # list[Employee] | 
 idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
-employee = [ { "MiddleNames": "Frank" } ] # list[Employee] |  (optional)
 try:
     # Updates an employee's detail
-    api_response = api_instance.update_employee(xero_tenant_id, employee_id, idempotency_key=idempotency_key, employee=employee)
+    api_response = api_instance.update_employee(xero_tenant_id, employee_id, employee, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling PayrollAuApi->update_employee: %s\n" % e)
@@ -1793,8 +1793,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **employee_id** | [**str**](.md)| Employee id for single object | 
+ **employee** | [**list[Employee]**](Employee.md)|  | 
  **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
- **employee** | [**list[Employee]**](Employee.md)|  | [optional] 
 
 ### Return type
 
@@ -1879,7 +1879,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_pay_run**
-> PayRuns update_pay_run(xero_tenant_id, pay_run_id, idempotency_key=idempotency_key, pay_run=pay_run)
+> PayRuns update_pay_run(xero_tenant_id, pay_run_id, pay_run, idempotency_key=idempotency_key)
 
 Updates a pay run
 
@@ -1913,11 +1913,11 @@ api_instance = PayrollAuApi(api_client)
 
 xero_tenant_id = 'xero_tenant_id_example' # str | Xero identifier for Tenant
 pay_run_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c' # str | PayRun id for single object
+pay_run = [xero_python.payrollau.PayRun()] # list[PayRun] | 
 idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
-pay_run = [xero_python.payrollau.PayRun()] # list[PayRun] |  (optional)
 try:
     # Updates a pay run
-    api_response = api_instance.update_pay_run(xero_tenant_id, pay_run_id, idempotency_key=idempotency_key, pay_run=pay_run)
+    api_response = api_instance.update_pay_run(xero_tenant_id, pay_run_id, pay_run, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling PayrollAuApi->update_pay_run: %s\n" % e)
@@ -1929,8 +1929,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **pay_run_id** | [**str**](.md)| PayRun id for single object | 
+ **pay_run** | [**list[PayRun]**](PayRun.md)|  | 
  **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
- **pay_run** | [**list[PayRun]**](PayRun.md)|  | [optional] 
 
 ### Return type
 
@@ -1948,7 +1948,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_payslip**
-> Payslips update_payslip(xero_tenant_id, payslip_id, idempotency_key=idempotency_key, payslip_lines=payslip_lines)
+> Payslips update_payslip(xero_tenant_id, payslip_id, payslip_lines, idempotency_key=idempotency_key)
 
 Updates a payslip
 
@@ -1982,11 +1982,11 @@ api_instance = PayrollAuApi(api_client)
 
 xero_tenant_id = 'xero_tenant_id_example' # str | Xero identifier for Tenant
 payslip_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c' # str | Payslip id for single object
+payslip_lines = { "Payslip": { "EmployeeID": "cdfb8371-0b21-4b8a-8903-1024df6c391e", "DeductionLines": [ { "DeductionTypeID": "727af5e8-b347-4ae7-85fc-9b82266d0aec", "CalculationType": "FIXEDAMOUNT", "NumberOfUnits": 10 } ] } } # list[PayslipLines] | 
 idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
-payslip_lines = { "Payslip": { "EmployeeID": "cdfb8371-0b21-4b8a-8903-1024df6c391e", "DeductionLines": [ { "DeductionTypeID": "727af5e8-b347-4ae7-85fc-9b82266d0aec", "CalculationType": "FIXEDAMOUNT", "NumberOfUnits": 10 } ] } } # list[PayslipLines] |  (optional)
 try:
     # Updates a payslip
-    api_response = api_instance.update_payslip(xero_tenant_id, payslip_id, idempotency_key=idempotency_key, payslip_lines=payslip_lines)
+    api_response = api_instance.update_payslip(xero_tenant_id, payslip_id, payslip_lines, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling PayrollAuApi->update_payslip: %s\n" % e)
@@ -1998,8 +1998,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **payslip_id** | [**str**](.md)| Payslip id for single object | 
+ **payslip_lines** | [**list[PayslipLines]**](PayslipLines.md)|  | 
  **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
- **payslip_lines** | [**list[PayslipLines]**](PayslipLines.md)|  | [optional] 
 
 ### Return type
 
@@ -2017,7 +2017,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_superfund**
-> SuperFunds update_superfund(xero_tenant_id, super_fund_id, idempotency_key=idempotency_key, super_fund=super_fund)
+> SuperFunds update_superfund(xero_tenant_id, super_fund_id, super_fund, idempotency_key=idempotency_key)
 
 Updates a superfund
 
@@ -2051,11 +2051,11 @@ api_instance = PayrollAuApi(api_client)
 
 xero_tenant_id = 'xero_tenant_id_example' # str | Xero identifier for Tenant
 super_fund_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c' # str | Superfund id for single object
+super_fund =  [ { "Type":"REGULATED", "Name":"Nice23534" } ] # list[SuperFund] | 
 idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
-super_fund =  [ { "Type":"REGULATED", "Name":"Nice23534" } ] # list[SuperFund] |  (optional)
 try:
     # Updates a superfund
-    api_response = api_instance.update_superfund(xero_tenant_id, super_fund_id, idempotency_key=idempotency_key, super_fund=super_fund)
+    api_response = api_instance.update_superfund(xero_tenant_id, super_fund_id, super_fund, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling PayrollAuApi->update_superfund: %s\n" % e)
@@ -2067,8 +2067,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **super_fund_id** | [**str**](.md)| Superfund id for single object | 
+ **super_fund** | [**list[SuperFund]**](SuperFund.md)|  | 
  **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
- **super_fund** | [**list[SuperFund]**](SuperFund.md)|  | [optional] 
 
 ### Return type
 
@@ -2086,7 +2086,7 @@ Name | Type | Description  | Notes
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
 # **update_timesheet**
-> Timesheets update_timesheet(xero_tenant_id, timesheet_id, idempotency_key=idempotency_key, timesheet=timesheet)
+> Timesheets update_timesheet(xero_tenant_id, timesheet_id, timesheet, idempotency_key=idempotency_key)
 
 Updates a timesheet
 
@@ -2120,11 +2120,11 @@ api_instance = PayrollAuApi(api_client)
 
 xero_tenant_id = 'xero_tenant_id_example' # str | Xero identifier for Tenant
 timesheet_id = '4ff1e5cc-9835-40d5-bb18-09fdb118db9c' # str | Timesheet id for single object
+timesheet = [ { "EmployeeID":"b34e89ff-770d-4099-b7e5-f968767118bc", "StartDate":"/Date(1573171200000+0000)/", "EndDate":"/Date(1573689600000+0000)/", "Status":"APPROVED", "Hours":22.0, "TimesheetID":"a7eb0a79-8511-4ee7-b473-3a25f28abcb9", "TimesheetLines":[ { "EarningsRateID":"ab874dfb-ab09-4c91-954e-43acf6fc23b4", "TrackingItemID":"af5e9ce2-2349-4136-be99-3561b189f473", "NumberOfUnits":[ 2.0, 10.0, 0.0, 0.0, 5.0, 0.0, 5.0 ], "UpdatedDateUTC":"/Date(1573516185127+0000)/" } ] } ] # list[Timesheet] | 
 idempotency_key = 'KEY_VALUE' # str | This allows you to safely retry requests without the risk of duplicate processing. 128 character max. (optional)
-timesheet = [ { "EmployeeID":"b34e89ff-770d-4099-b7e5-f968767118bc", "StartDate":"/Date(1573171200000+0000)/", "EndDate":"/Date(1573689600000+0000)/", "Status":"APPROVED", "Hours":22.0, "TimesheetID":"a7eb0a79-8511-4ee7-b473-3a25f28abcb9", "TimesheetLines":[ { "EarningsRateID":"ab874dfb-ab09-4c91-954e-43acf6fc23b4", "TrackingItemID":"af5e9ce2-2349-4136-be99-3561b189f473", "NumberOfUnits":[ 2.0, 10.0, 0.0, 0.0, 5.0, 0.0, 5.0 ], "UpdatedDateUTC":"/Date(1573516185127+0000)/" } ] } ] # list[Timesheet] |  (optional)
 try:
     # Updates a timesheet
-    api_response = api_instance.update_timesheet(xero_tenant_id, timesheet_id, idempotency_key=idempotency_key, timesheet=timesheet)
+    api_response = api_instance.update_timesheet(xero_tenant_id, timesheet_id, timesheet, idempotency_key=idempotency_key)
     pprint(api_response)
 except ApiException as e:
     print("Exception when calling PayrollAuApi->update_timesheet: %s\n" % e)
@@ -2136,8 +2136,8 @@ Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
  **xero_tenant_id** | **str**| Xero identifier for Tenant | 
  **timesheet_id** | [**str**](.md)| Timesheet id for single object | 
+ **timesheet** | [**list[Timesheet]**](Timesheet.md)|  | 
  **idempotency_key** | **str**| This allows you to safely retry requests without the risk of duplicate processing. 128 character max. | [optional] 
- **timesheet** | [**list[Timesheet]**](Timesheet.md)|  | [optional] 
 
 ### Return type
 
diff --git a/xero_python/payrollnz/api/payroll_nz_api.py b/xero_python/payrollnz/api/payroll_nz_api.py
index e182b1a3..61b3e708 100644
--- a/xero_python/payrollnz/api/payroll_nz_api.py
+++ b/xero_python/payrollnz/api/payroll_nz_api.py
@@ -10,7 +10,7 @@
 """
 
 """
-    OpenAPI spec version: 2.40.3
+    OpenAPI spec version: 3.0.0
 """
 
 import importlib
diff --git a/xero_python/payrolluk/api/payroll_uk_api.py b/xero_python/payrolluk/api/payroll_uk_api.py
index f2849c9d..5322dbfe 100644
--- a/xero_python/payrolluk/api/payroll_uk_api.py
+++ b/xero_python/payrolluk/api/payroll_uk_api.py
@@ -10,7 +10,7 @@
 """
 
 """
-    OpenAPI spec version: 2.40.3
+    OpenAPI spec version: 3.0.0
 """
 
 import importlib
diff --git a/xero_python/project/api/project_api.py b/xero_python/project/api/project_api.py
index 918da26a..5d807b9b 100644
--- a/xero_python/project/api/project_api.py
+++ b/xero_python/project/api/project_api.py
@@ -10,7 +10,7 @@
 """
 
 """
-    OpenAPI spec version: 2.40.3
+    OpenAPI spec version: 3.0.0
 """
 
 import importlib