resolved intitate payment problem

src/main/java/com/billpaymentservice/bbps/dto/request/BillPaymentRequest.java

@@ -32,7 +32,7 @@ public class BillPaymentRequest extends BaseClass {
 
 	private String customerMobNo;
 
-	private String txnAmount; // Changed to @NotNull as it's an Integer (non-nullable)
+	private Integer txnAmount; // Changed to @NotNull as it's an Integer (non-nullable)
 
 	private String paymentRefId;
 

src/main/java/com/billpaymentservice/bbps/dto/sentRequest/BillPaymentForwardRequest.java

@@ -29,7 +29,7 @@ public class BillPaymentForwardRequest {
     private String billerCategory;
     private String macAdress;
     private String customerMobNo;
-    private String txnAmount;
+    private Integer txnAmount;
     private String paymentRefId;
     private String clientReqId;
     private String paymentChannel;