People who create Requests for non-stock items typically get current cost information from vendors as of that moment in time. Unfortunately, when a request is promoted to a requisition, the Purchase Requisition system overrides the line item costs with default values from the non-stock item master file. If the same person who entered the request also promotes it to a requisition, he has to re-enter the costs again. If a workflow has been set up so that a different person promotes the request to a requisition, that person is unaware that the wrong costs are on the requisition lines. Then it gets turned into a PO with wrong line item costs.