A: The first step is to determine whether or not the invoice has a balance. Determine this by
If there is a balance, the “Payments Today” field in the Open Invoices File (AR4) is set incorrectly. This indicates that the invoice is already being paid. To correct this you will need to run an ARWAR4 Utility.
It may be a good idea to do this first with a test company to avoid incorrectly altering an account. A copy can be done using Library Master Copy Company feature.
To complete, use File>Run> ARWAR4 as shown
Click Yes, and you should be complete.