Solution : https://service.sap.com/sap/support/notes/864583 (SAP Service marketplace login required)
Key words :
form move_userfields tables postab structure vbmtv, header status move gt_vbuk-xxxxx, header move gt_vbak-xxxxx, insertion <<<< move gt_vbak-erdat, move gt_vbak-erzet, mentioned transactions equally, postab-erdat, postab-erzet, postab-zzxxxxx, terms erdat
Related Notes :
| 350068 | Additionl fields in VA05:Customer material number as example |
| 191978 | USER EXITS for user-defined fields missing |
| 170183 |