Solution : https://service.sap.com/sap/support/notes/329820 (SAP Service marketplace login required)
Key words :
additional key words fb50, system generates error message, fi enjoy transaction, green traffic light, missing field contents, profit center accounting, contact sap support, account line items, system displays, line items
Related Notes :
373529 | FB50 / FB60 : Lines missing in PCA document |
339666 | FB60: Document with initial vendor / G/L account |