ACH payments with payment medium work bench

Hello Forum,

Our client requirement is like below:

Currently we are using payment medium work bench for ACH payments, the format is “ACH” and format supplement is “CTX” in payment methods in country (FBZP)

Once we execute the APP with RFFOEDI1 program, system will generate the remittance bank file, now client wants to add the invoice number in the existing bank file, I am attaching the test ACH bank file, please advise me in which form or program we need to do the necessary changes to achieve this requirement.

In OBPM1, we are using standard “ACH” payment medium format.

Regards,

Ravi.