Bring the Requisition up by using Material Management –> Purchasing –> Purchase Requisition –> Display. Where the requisition overview screen is displayed, select an item by clicking on the selection box to the left of the item. Click on the General Statistics icon on the application tool bar. Select item. General Statistics icon. The screen appears, in the middle, under Order Statistics, in the field Purchase Order, if there is no number the PO has not been issued.