Solution : https://service.sap.com/sap/support/notes/505127 (SAP Service marketplace login required)
Key words :
terms bus10503 characteristics reason, internal number assignment, source code corrections, attached related notes, cdp characteristics, parameter ext_number_assignment, solution implement, characteristics, manufacturingorderaps, savemultiple
Related Notes :
| 499978 | BAPI: No characteristics if you create order without PPM |
| 488682 | Characteristics are lost with order change in R/3 |
| 459599 | Changing char. value assignment for planned order via BAPI |