When a customer processes customer payments and the payment(s) gets rejected, the transaction will have a Response code attached to the record. The Response code explains the reason for the rejection. There are two places where those codes can be translated.
Sedona Office>Accounts Receivable> EFT Processing>Rejected tab>Response Codes
The Forte link will have the same response codes on their website.
https://www.forte.net/devdocs/reference/response_codes.htm
