Goods Receipt against Purch Order with WBS not posted qty in Project Stock

Dear Gurus

We have recently implemented SAP in our company. One problem which we have encountered is at the time of GR of material against Purchase Orders with WBS assignments. Our requirement is that the goods at the time of GR should undergo the QM process and after Usage decision in QM, it should be available in project stock till the time we consume the material.

Contrary to above, the current behaviour of the system is that at the time of GR, the quantity on order is reduced by the GR quantity but nethier the project unrestricted stock nor the project quality stock is updated. Apparently it seems that the stock is consumed immediately at the time of receipt.

It will be appreciated, if any one of you can advise on above.

Muhammad Asif Nakhuda