Solution : https://service.sap.com/sap/support/notes/165516 (SAP Service marketplace login required)
Key words : 
additional key words missing component assignment, sales order bom, note completes note 145322, component assignments, component conversion, header bom, source code, solution implement, symptom applies, note 145322
Related Notes : 
       
| 196652 | |
| 195026 | |
| 145322 | Sales order plan: component conversion | 
| 101281 | CA01: Upgrade problem for component allocation |