How do I edit and resubmit an invoice that I have sent?
If you need to change information on an invoice that is already submitted, the invoice must have a status of Failed or Rejected.
To update the invoice details and resubmit the invoice:
If the invoice is not in Failed or Rejected status, you can do one of the following:
Contact your customer if the purchase order contains incorrect information.
The edited invoice contains the same invoice number and invoice date by default. If permitted by your customer's invoicing rules you can reuse the original invoice number. Otherwise, you need to make the invoice number unique.
Ariba Network > Transaction Documents > Transaction (Invoicing)