Solution : https://service.sap.com/sap/support/notes/184898 (SAP Service marketplace login required)
Key words : 
additional key words component assignment, automatic component conversion, fixed phantom assembly, basic start scheduling, sales order boms, sales document, planned order, header material, requirements planning, requirements dates
Related Notes : 
       
| 196652 | |
| 145322 | Sales order plan: component conversion |