Problem
You cannot edit a PO because it is attached to an exported invoice. The error message says, Cannot add a PO to invoice because it is exported.
Solution
You cannot edit a PO because it is attached to an exported invoice. You will need to cancel the PO, create an adjustment invoice, and create a new PO with the correct details to attach to the adjustment invoice.
What is the workaround for editing a PO that is attached to an exported invoice?
Cancel the current PO.
Search for and go to the PO you want to edit.
Add an adjustment to the exported invoice.
Search for and go to the invoice associated with the PO.
Create a new PO.
In the Job # field on the Create a Purchase Order screen, enter the job number of the invoice associated with the original invoice PO.
Remember, it's best to make these changes before the invoice is exported. This process allows you to update PO details even after the original invoice has been exported.