Error on Posting Purchase Invoice – Item Entry Relation does not exist

There are times when BC does not give you a clear error messages. This is one of them. When you try to post purchase invoice for item receipt but not invoiced, the “Item Entry Relation does not exist” error shows up.

Upon inspection, the issue is actually coming from the Item Tracking Lines.

You will see that Qty. to Invoice is zero there.

Update the Qty. to Invoice, and you should be able to post now.