Solution : https://service.sap.com/sap/support/notes/323813 (SAP Service marketplace login required)
Key words :
vendor line item list, header displays transaction rfbv, billing line item, posting icon reason, display posted documents, terms bseg-xkres, source code corrections, calling transaction fbv0, fi enjoy transaction, post parked documents
Related Notes :
339666 | FB60: Document with initial vendor / G/L account |
325595 | A tightened program check with posting |
207446 | FB60: Document with empty vendor can be posted |