manual reservation consumption

Dear all,

I have a MTS scenario and am using startegy 40. I have a scenario where i want to create a manual reservation for a customer A through MB21 and mov. type 241. I do it ahead of actual order receipt to ensure that the order is definitely served when it arrives. Also, if there is no stock then the system creates a reservation with a negative sign. Now on receipt of order i'd want this reservation to automatically get assigned to this order (negative or positive), and not create a duplicate requirement while planning through MRP, one corresponding to reservation and the other corresponding to the sales order.

In a nut shell, the manual reservation created should get consumed by the incoming sales order automatically.

Any inputs will be appreciated, and an early reply will be highly appreciated 😊

Thanks & Regards,