Change the Supplier for an Invoice
You can change a supplier after creating the invoice, but not after submitting the invoice or after extraction. You cannot change the supplier if the invoice is assigned to you (but not created by you) via a process, such as Capture Processing or import or by AP User assignment.
To change the current supplier for an invoice to another supplier:
Open the desired invoice.
In the Supplier Information section, click Change.
Perform a search for the supplier.
Select the new supplier.
Click Save.
