Procurement Services gives instruction in the event that a duplicate invoice is posted in Ariba.
An invoice is considered a duplicate if the invoice number, date and amount are the same; with a prefix or suffix added. For example, Invoice 123456 and Invoice A123456, 123456A or 123456022814 with the same invoice date and amount would be a duplicate. A few of our vendors have submitted invoices via the Ariba Network and sent paper invoices.
If any of the above information is different, those invoices are not considered a duplicate. The user should contact the vendor to resolve the issue, possibly a credit memo.