When a purchase order is created, it remains in the Purchase Orders screen. The details of the purchase order are carried forward to the Receive Items screen where you can receive items against it. This screen allows you to mark the received items against the selected purchase order. You can double-click any specific purchase order to open the Receive Items screen.
For each open purchase order, the Receive Items screen displays such as number of items ordered and associated details. You also know how many items have been received and how many are pending. After the items ordered equal items received, the purchase order is closed and turns blue in the Receive Items list view.
When you receive items on a purchase order, you can record them and create a vendor bill from that. In that case, the information is carried to the Expense Log or Sheet View screen. You can receive as many items as ordered or greater/less than that.