Solution : https://service.sap.com/sap/support/notes/440912 (SAP Service marketplace login required)
Key words : 
directly manufactured component, duplicate settlement rule, saved assembly order, settlement rule, assembly order, sales order, created order, terms co02, colordproc reason, prerequisites notes 314549
Related Notes : 
       
| 507971 | VA01:Dump when reading master data in assembly order network | 
| 387733 | CO630 when creating assembly order with network | 
| 318747 | CO630 for assembly with collective order | 
| 314549 | CO630 for assembly with collective order |