fix: Incorrect TCS amount deducted in Sales Invoice

(cherry picked from commit 08443c6)

erpnext/accounts/doctype/tax_withholding_category/tax_withholding_category.py

@@ -326,6 +326,9 @@ def get_advance_vouchers(
 		"party": ["in", parties],
 	}
 
+	if party_type == "Customer":
+		filters.update({"against_voucher": ["is", "not set"]})
+
 	if company:
 		filters["company"] = company
 	if from_date and to_date:
@@ -491,10 +494,13 @@ def get_tcs_amount(parties, inv, tax_details, vouchers, adv_vouchers):
 	cumulative_threshold = tax_details.get("cumulative_threshold", 0)
 
 	current_invoice_total = get_invoice_total_without_tcs(inv, tax_details)
+	print(invoiced_amt, advance_amt, credit_note_amt, current_invoice_total)
 	total_invoiced_amt = current_invoice_total + invoiced_amt + advance_amt - credit_note_amt
 
+	print(total_invoiced_amt, "######", "total_invoiced_amt")
 	if cumulative_threshold and total_invoiced_amt >= cumulative_threshold:
 		chargeable_amt = total_invoiced_amt - cumulative_threshold
+		print(chargeable_amt, "#########")
 		tcs_amount = chargeable_amt * tax_details.rate / 100 if chargeable_amt > 0 else 0
 
 	return tcs_amount