When generating the Payment IDOC we see that the back slash in the Invoice reference number (BKPF-XBLNR) is converted in the IDOC REMADV-PEXR2002 in the field E1EDP02-BELNR into a forward slash.

Example:

SAP INVOICE

BKPF-XBLNR value is TEST01\

But

DOC REMADV-PEXR2002

E1EDP02-BELNR value is TEST01/

Any ideas about how to overcame this issue?

Thanks,