Purchase orders
I am working on a R&D project and created a PO for the vendor. I have to track how the project is going through a PO. The line items are not for individual items purchased. (Ex. Beta Units - Built and tested for $20,000). As the project progresses I will be invoiced for say $4532.50 of this $20,000. When I create a bill for this and try to apply it to the open PO it then shows the item for $20,000 is all received. How can I just apply this amount and keep this line item open?