Rejecting Items if Accounting has Processed the Invoice If the Purchase Order has been processed through accounting: Transfer the discrepant material into the MRB (materials review board) warehouse via Inventory Handling. Enter the PO DMR module (discrepant material return). Add from Inventory. (This is called an INVENTORY DMR). If the user has already pulled the kit associated with the part to be returned to the supplier.  Enter the Kitting module. Find the work order. Depress the Utility tab and depress the De Kit button.  This process will return the part into the inventory warehouse. (Please refer to the Kitting & Shortage Mgmt module).