Solution : https://service.sap.com/sap/support/notes/311762 (SAP Service marketplace login required)
Key words :
item batch schedule line & exists /, additional key words va01, item/schedule line, preceding document exists, contained reserved assignments, order processing, display message 269, changed manually', vbep-j_3abzus, vbep-j_3absnr
Related Notes :
| 334211 | AFS V2.5B fixpack #01 including Hot Packages 19-30 |