In case you receive only some of the items on the Purchase Order (but not all of the items), you can mark the Purchase Order as partially received. This will add the received items to your stock but will keep the other items in the expected status.
You can receive a Purchase Order in as many parts as necessary.
To partially receive a Purchase Order:
Click on the Delivery status of a PO either directly in the Buy screen or on the PO card.
Select "Receive some..."
In the pop-up window, select the items you wish to receive to stock. By default, the received quantity for a selected product is set to the total quantity to be received, but you can change this manually.
Enter the Received date if different than today and click "Receive".
The PO will now display Received and Not Received items in separate sections and the Delivery status will change to Partially received:
To receive all items, mark the Delivery status of the PO to Received or receive more items by clicking on the status Partially received and selecting "Receive some...".
When all the items on the PO have been received, the PO will move to the Done table of the Buy screen.