Preliminary Purchase Requisition for WBS

Hi,

  In my scenario I do not want to create reservations but just PRs and I also have to take the material in the stock.

  For that i configured my Procurement indicator for preliminary PR for WBS.But that makes the material component irrelevant for costing while I want to do network costing.

Is there any way by which I can make the material component relevant for costing even when i am choosing the preliminary PR for WBS option?

Thanks and Regards