Solution : https://service.sap.com/sap/support/notes/178038 (SAP Service marketplace login required)
Key words : 
externally processed subcontracted order receive, additional key words co01, attached source code corrections, symptom components assigned, incorrect requirements type, order type, incorrect stock, mrp relevance, resb-no_disp, goods movements
Related Notes : 
       
| 162014 | Incor. recommendation goods issue of parts provided | 
| 150100 | Wrong compnnt indicator after release of prod.order |