Solution : https://service.sap.com/sap/support/notes/107350 (SAP Service marketplace login required)
Key words :
additional key words cobl, document change transaction, customer-specific fields, document change rules, coding block, posting period, made correctly, tbaer-xbupe, tbaer-xaend, missing functions
Related Notes :
| 29708 | Entry of account assignment fields in FB02, FBD2 |