How to edit a processing code on Sage 300 Payment Processing
Steps:
Note: If a processing code has been specified for a saved credit card in Accounts Receivable, or if it has been used to process a credit card transaction, you cannot modify or delete the processing code.
Open Common Services > Payment Processing > PMT Setup > Processing Codes.
In the Processing Code field, enter or select the code you want to edit.
Make your changes to the processing code.
Tip: If you are changing merchant information, click Validate to ensure that the new information you entered is valid.