Solution : https://service.sap.com/sap/support/notes/149415 (SAP Service marketplace login required)
Key words : 
stlty_w_ol        stlty    stlnr_w_ol        stnum    stlal_w_ol        stalt    kante_old         stkan    stlty_w           stlty    stlnr_w           stnum    stlal_w           stalt    kante             stkan           caution, stlty_w_old       stlty    stlnr_w_old       stnum    stlal_w_old       stalt    kante_old         stkan    stlty_w           stlty    stlnr_w           stnum    stlal_w           stalt    kante             stkanin, caalt             stalt                                    <--- newadd, additional key words cu51, caalt             stalt                                    <---, attached source code, order task list, sap function group, substituted class items, order plan
Related Notes : 
       
| 305530 | Note 149415, double function modules | 
| 196652 | |
| 195026 | |
| 154986 | Missing components when order BOM is converted | 
| 145322 | Sales order plan: component conversion | 
| 142911 | Comp. asnmt phantm assmly incorrect via classes | 
| 101281 | CA01: Upgrade problem for component allocation |