Solution : https://service.sap.com/sap/support/notes/772498 (SAP Service marketplace login required)
Key words : 
sales-order-related production/production lot manufacturing                        planned order - total quantity, sales-order-related production/production lot manufacturing, -stock production                        planned order - total quantity, sales-order-related production, usage probability   requirement quantity            component a1, usage probability requirement quantity            component a1, qty       withdrawl quantity            component a1, production lot manufacturing scenarios, production lot manufacturing, incorrect material postings occur
Related Notes : 
       
| 789260 | MF70: Incorrect component quantities during withdrawal | 
| 661684 | MFBF/MF70: Separated backflush and discontinued part | 
| 513874 | Discontinued part in the planned order (explanatory note) |