Solution : https://service.sap.com/sap/support/notes/129473 (SAP Service marketplace login required)
Key words :
additional key words obxb, account grouping code 'a', totransaction obxr/obxb, payment clearing account, payment account, payment clearing, billing document, message f5611, 'acct determination, ch/acts &'
Related Notes :
| 113347 | Down payment process. as of Release 4.0x (standard) |