3307576 - Unable to Update Payment Method Through Mass Data Maintenance - SAP ByD

While trying to update an Account's payment method through Mass Data Maintenance, it creates a new record instead of overwriting it.

SAP Business ByDesign

1. Go to the Mass Data Maintenance work center.
2. Search for the relevant file and open it.
3. Check the Payment Method record for the account being updated.
4. Go to the Account Management work center. 
5. Open the Accounts view.
6. Search and open the same account from the file.
7. Navigate to Financial tab and click Payment Method.
8. There are two records for the same company.

There is a technical restriction on the system causing that the Mass Data Maintenance cannot update the payment method.

To perform an update of payment methods, these steps should be followed:

1. Via the web service, send a request to update customer payment data.
2. Set the "PaymentFormCompleteTransmissionIndicator".
3. Send the complete list of PaymentForms for the combination of Company and AccountDetermination.

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