diff --git a/src/__mocks__/base.ts b/src/__mocks__/base.ts
index b49ce9f12..70982397c 100644
--- a/src/__mocks__/base.ts
+++ b/src/__mocks__/base.ts
@@ -112,7 +112,8 @@ const getReversalRequest = (poiTransaction: TransactionIdentification): Reversal
             TimeStamp: poiTransaction.TimeStamp
         },
     },
-    ReversalReason: ReversalReasonType.MerchantCancel
+    ReversalReason: ReversalReasonType.MerchantCancel,
+    SaleData: saleData
 });
 
 const getSaleToPOIRequest = (messageHeader: MessageHeader, request: Partial<SaleToPOIRequest>): SaleToPOIRequest => ({
diff --git a/src/__tests__/terminalCloudAPI.spec.ts b/src/__tests__/terminalCloudAPI.spec.ts
index ce2d68e6c..378893b49 100644
--- a/src/__tests__/terminalCloudAPI.spec.ts
+++ b/src/__tests__/terminalCloudAPI.spec.ts
@@ -46,7 +46,7 @@ afterEach((): void => {
 
 const isCI = process.env.CI === "true" || (typeof process.env.CI === "boolean" && process.env.CI);
 describe("Terminal Cloud API", (): void => {
-    test.each([isCI, true])("should make an async payment request, isMock: %p", async (isMock): Promise<void> => {
+    test.each([isCI])("should make an async payment request, isMock: %p", async (isMock): Promise<void> => {
         !isMock && nock.restore();
         scope.post("/async").reply(200, asyncRes);
 
@@ -57,7 +57,7 @@ describe("Terminal Cloud API", (): void => {
         expect(requestResponse).toEqual("ok");
     });
 
-    test.each([isCI, true])("should make a sync payment request, isMock: %p", async (isMock): Promise<void> => {
+    test.each([isCI])("should make a sync payment request, isMock: %p", async (isMock): Promise<void> => {
         !isMock && nock.restore();
         scope.post("/sync").reply(200, syncRes);
 
@@ -68,7 +68,7 @@ describe("Terminal Cloud API", (): void => {
         expect(terminalAPIResponse.SaleToPOIResponse?.MessageHeader).toBeDefined();
     });
 
-    test.each([isCI, true])("should return event notification if response contains it, isMock: %p", async (isMock): Promise<void> => {
+    test.each([isCI])("should return event notification if response contains it, isMock: %p", async (isMock): Promise<void> => {
         !isMock && nock.restore();
 
         const terminalAPIPaymentRequest = createTerminalAPIPaymentRequest();
@@ -79,23 +79,24 @@ describe("Terminal Cloud API", (): void => {
         expect(terminalAPIResponse.SaleToPOIRequest?.EventNotification).toBeDefined();
     });
 
-    test.each([isCI, true])("should make an async refund request, isMock: %p", async (isMock): Promise<void> => {
+    test.each([isCI])("should make an async refund request, isMock: %p", async (isMock): Promise<void> => {
         !isMock && nock.restore();
         scope.post("/sync").reply(200, syncRes);
 
         const terminalAPIPaymentRequest = createTerminalAPIPaymentRequest();
         const terminalAPIResponse: TerminalApiResponse = await terminalCloudAPI.sync(terminalAPIPaymentRequest);
 
+        const pOITransactionId = terminalAPIResponse.SaleToPOIResponse!.PaymentResponse!.POIData!.POITransactionID;
+        expect(pOITransactionId).toBeTruthy();
+
         scope.post("/sync").reply(200, syncRefund);
 
-        const pOITransactionId = terminalAPIResponse.SaleToPOIResponse?.PaymentResponse?.POIData!.POITransactionID;
-        if(pOITransactionId) {
-            const terminalAPIRefundRequest = createTerminalAPIRefundRequest(pOITransactionId);
-            const terminalAPIRefundResponse = await terminalCloudAPI.sync(terminalAPIRefundRequest);
+        const terminalAPIRefundRequest = createTerminalAPIRefundRequest(pOITransactionId);
+        const id = Math.floor(Math.random() * Math.floor(10000000)).toString();
+        terminalAPIRefundRequest.SaleToPOIRequest.MessageHeader.ServiceID = id;
+        terminalAPIRefundRequest.SaleToPOIRequest.ReversalRequest!.SaleData!.SaleToAcquirerData!.currency = 'EUR';
+        const terminalAPIRefundResponse = await terminalCloudAPI.sync(terminalAPIRefundRequest);
 
-            expect(terminalAPIRefundResponse.SaleToPOIResponse?.ReversalResponse).toBeDefined();
-        } else {
-            fail();
-        }
-    });
+        expect(terminalAPIRefundResponse.SaleToPOIResponse?.ReversalResponse?.Response.Result).toBe('Success');
+    }, 20000);
 });
diff --git a/src/services/terminalCloudAPI.ts b/src/services/terminalCloudAPI.ts
index 3adda40a0..13c17362f 100644
--- a/src/services/terminalCloudAPI.ts
+++ b/src/services/terminalCloudAPI.ts
@@ -46,14 +46,6 @@ class TerminalCloudAPI extends ApiKeyAuthenticatedService {
             const reqWithAppInfo = {saleToPOIRequest};
 
             mergeDeep(request, reqWithAppInfo);
-            const formattedRequest = ObjectSerializer.serialize(request, "TerminalApiRequest");
-
-            if (formattedRequest.SaleToPOIRequest?.PaymentRequest?.SaleData?.SaleToAcquirerData) {
-                const dataString = JSON.stringify(formattedRequest.SaleToPOIRequest.PaymentRequest.SaleData.SaleToAcquirerData);
-                formattedRequest.SaleToPOIRequest.PaymentRequest.SaleData.SaleToAcquirerData = Buffer.from(dataString).toString("base64");
-            }
-
-            return formattedRequest;
         }
 
         return ObjectSerializer.serialize(request, "TerminalApiRequest");
diff --git a/src/services/terminalLocalAPI.ts b/src/services/terminalLocalAPI.ts
index e92e8c9fb..3d2a86ea6 100644
--- a/src/services/terminalLocalAPI.ts
+++ b/src/services/terminalLocalAPI.ts
@@ -47,12 +47,6 @@ class TerminalLocalAPI extends ApiKeyAuthenticatedService {
         securityKey: SecurityKey,
     ): Promise<TerminalApiResponse> {
         const formattedRequest = ObjectSerializer.serialize(terminalApiRequest, "TerminalApiRequest");
-
-        if (formattedRequest.SaleToPOIRequest?.PaymentRequest?.SaleData?.SaleToAcquirerData) {
-            const dataString = JSON.stringify(formattedRequest.SaleToPOIRequest.PaymentRequest.SaleData.SaleToAcquirerData);
-            formattedRequest.SaleToPOIRequest.PaymentRequest.SaleData.SaleToAcquirerData = Buffer.from(dataString).toString("base64");
-        }
-
         const saleToPoiSecuredMessage: SaleToPOISecuredMessage = NexoCrypto.encrypt(
             terminalApiRequest.SaleToPOIRequest.MessageHeader,
             JSON.stringify(formattedRequest),
diff --git a/src/typings/terminal/models.ts b/src/typings/terminal/models.ts
index 19ae47323..2a8c2baec 100644
--- a/src/typings/terminal/models.ts
+++ b/src/typings/terminal/models.ts
@@ -853,6 +853,9 @@ export class ObjectSerializer {
             return transformedData;
         } else if (type === "Date") {
             return data.toISOString();
+        } else if (type === "SaleToAcquirerData") {
+            const dataString = JSON.stringify(data);
+            return Buffer.from(dataString).toString("base64");
         } else {
             if (enumsMap[type]) {
                 return data;
diff --git a/src/typings/terminal/reversalRequest.ts b/src/typings/terminal/reversalRequest.ts
index 66504c371..49d059325 100644
--- a/src/typings/terminal/reversalRequest.ts
+++ b/src/typings/terminal/reversalRequest.ts
@@ -33,21 +33,22 @@
 import { CustomerOrder } from './customerOrder';
 import { OriginalPOITransaction } from './originalPOITransaction';
 import { ReversalReasonType } from './reversalReasonType';
+import { SaleData } from './saleData';
 
 export class ReversalRequest {
-    'CustomerOrderID'?: CustomerOrder;
+    'SaleData'?: SaleData;
     'OriginalPOITransaction': OriginalPOITransaction;
-    'ReversalReason': ReversalReasonType;
     'ReversedAmount'?: number;
-    'SaleReferenceID'?: string;
+    'ReversalReason': ReversalReasonType;
+    'CustomerOrder'?: CustomerOrder;
 
     static discriminator: string | undefined = undefined;
 
     static attributeTypeMap: Array<{name: string, baseName: string, type: string}> = [
         {
-            "name": "CustomerOrderID",
-            "baseName": "CustomerOrderID",
-            "type": "CustomerOrder"
+            "name": "SaleData",
+            "baseName": "SaleData",
+            "type": "SaleData",
         },
         {
             "name": "OriginalPOITransaction",
@@ -65,9 +66,9 @@ export class ReversalRequest {
             "type": "number"
         },
         {
-            "name": "SaleReferenceID",
-            "baseName": "SaleReferenceID",
-            "type": "string"
+            "name": "CustomerOrder",
+            "baseName": "CustomerOrder",
+            "type": "CustomerOrder"
         }    ];
 
     static getAttributeTypeMap() {