Solution : https://service.sap.com/sap/support/notes/833388 (SAP Service marketplace login required)
Key words : 
system overwrites missing information, abap system fields, relevant system fields, terms rv_accounting_document_create reason, previously detected error, error situation, billing document, interface detects, evaluated differently, table syst
Related Notes : 
       
| 674967 | Message VF050 when releasing billing document | 
| 664711 | SG105 with billing document release | 
| 510840 | Error message VF525 is not issued | 
| 506145 | VF050 when releasing a billing document III | 
| 501696 | VF050 during billing document release (II) | 
| 498880 | VF050 when releasing billing document | 
| 442477 | Incorrect error handling in RV_ACCOUNTING_DOCUMENT_CREATE |