Hi,
Accounts payable team will print the checks and send it to vendor, vendor will submit the checks for encasement, once it is en-cashed, the bank will send the en-cashed details to client.
This is the process will happen in payment process, Coming to EDI in sap you have to use RFFOEDI1 program in printout paymnet medium tab while executing the APP, Prior to that you have to maintain the same in payment method for country in FBZP, you need to perform the WE20 settings and with help of the basis consultant, you need to perform WE21 settings.
After APP run you need to execute the RSEOUT00 program to create the consolidated remittance file, It will save in AL11 file path, based on your WE21 settings.
I hope it is clear.
Regards,
Ravi