Message Number list used by SAP ABAP Class CL_WCAT_CUSTOMER_BILLING_DOC (Customer billing document)
SAP ABAP Class CL_WCAT_CUSTOMER_BILLING_DOC (Customer billing document) is using
# Object Type Object Name Object Description Note
     
1 Message Number  WRCAT - 003 No payment type found for company code &1 and billing type &2
2 Message Number  WRCAT - 004 Billing document &1 not relevant regarding planned rebate variances