User Exit for IDoc PEXR2002 - Debug Issue

Hi,

We need to populate PO, PO Item and Batch on PEXR2002 IDoc's segment E1EDP02. Based on some search, I found that User Exit zxf08u04 in EXIT_SAPLIEDP_002 can be used to get this functionality.

When I put a Break-Point in Include LIEDPF15, when it calls the User Exit, and ran Tcode F110 or Program RFFOEDI1, it's not stopping at this break-point. I want to see how the data is being gathered.

Also, Include LIEDPF15 is used in Main Program SAPLIEDP (EDI - Payment/Payment Advice Processing).

I want to understand how Programs RFFOEDI1 and SAPLIEDP are connected.

Could you please help me? I greatly appreciate that.

Thanks.