Solution : https://service.sap.com/sap/support/notes/304316 (SAP Service marketplace login required)
Key words :
additional key words accit-gsber, open item account line item, billing document transfer, error message f5808, related billing items, customer line, vendor line, related items, business area, required entry
Related Notes :
| 115949 | FI doc.:Business area missing fr. customer line itm |