Sale order stock should be considered as available stock during MRP run

Hi Gurus,

Please help in fulfilling the below mentioned requirement.

I have below mentioned stock scenario for a particular material

Unrestricted Stock = 50 Nos

Sale order stock (reserved to sale order using 412 E movement type) = 30 Nos

Sale Order (Customer) requirement = 100 Nos

Now when I run MRP for the above situation MRP should consider Unrestricted stock and Sale order stock and raise a procurement proposal for 20 Nos only.

Please suggest the required settings for this.