SAP Message >2716 - Payment order &1 is already &2

Diagnosis
A posting to this payment order is no longer possible due to the statusof the order.

System Response
Warning during entry, error message when posting.

Procedure
If you have entered a wrong number, correct your entry. Otherwise, letthe entry stand. When posting the lots, this item is then posted to theclarification account.
You can then decide upon further processing in clarification.