MRP run with MD01 by using user Exit

Hi all,

There is an issue with the user exit key used for the MRP controller wise MRP run with MD01. We tried to run MRP for the plant with the user exit for MRP controller wise selection of materials. I have given the required MRP controller values in the selection screen. But after the MRP run, I noticed  the proposals(purchase Requisition) are not created  for  the materials which was  happening with Manual MRP Run with MD02 & MD04.please help us  in this regard and the needful information follows

Regards

Lakshmanna