You can undo a match that has been either done automatically by the system, or manually by you.
Follow the steps below to undo a match:
On the homepage, select Manage Invoices.
In the Unprocessed tray, hover over the invoice in the PO match column.
A message appears stating the invoice has been matched to an order.
Select Undo match.
Step 4 (optional)
A message appears asking if you're sure you want to undo the match.
In the box, enter your reason for undoing the match.
Select OK complete the unmatching.
Alternatively, select Cancel if you don't want to undo the match.
The invoice matching status updates to to Pending. You now need to manually match the invoice to the correct order.
Go to The Pending status to see how to manually match a pending invoice.