Create Pur Req w.r.t RFQ

Hi all,

Can i create an Pur Req w.r.t RFQ ,when i goto Document overview in Pur Req we have option of Request for Quotation .

But i am not able to Create Purchase requisition w.r.t Quotation with that option

Is there any other method through which i can create PR wr.t RFQ. Or is there ant Config that i am missing

Regards

shailesh