Peoplesoft Accounts Payable - How to Record Returned checks in PSDB1 file layout

Hello Experts,

We have written a custom program to read the bank statement file and format it into PSDB1 file layout. Could you please advise how I can indicate returned checks in this layout? Is there any additional configuration required to achieve this?

Note -

1. Currently we use 05 on the PSDB1 file indicating that it's a check.
2. We are on PeopleSoft 9.2 / Tools 8.55.16 / Image 24
3. Cash Management is installed.