It is often the case that reminders or copies of invoices are inadvertently entered more than once, resulting in a duplicate payment.

It was almost two years before an invoice was refunded (Bschl 35), which was inadvertently paid with and without a 2% discount. The systematic analysis of the vendor data under SAP as part of a duplicate payment audit by EVV GmbH uncovered the overpayment and made it possible to recover the money.