If you checked Close Outstanding Items by Departments and Cost Centers in  Administration Panel | Settings | Program Parameters | Financials | General, it considers the department and cost center criteria when closing prepayments.

If department and cost center are the same in all selected lines to be closed (receivable/payable and prepayment), posting is performed without a message being returned.

If on the other hand they DIFFER in the selected lines, the following IRIS message is returned.

(For examples see close prepayments by departments and cost centers.)

Solution:

1. Cancel the procedure for closing prepayments. Before attempting to repeat the procedure, it is required that you fix references to departments and cost centers accordingly.

2. Ignore the message and close receivable/payable and prepayment. The contra entry of the original post in this case contains the department and cost center from the original post.