Invoice validation error - (AP810595)

Summary:

Content (required):

Error Message received when validating an invoice which had a prepayment applied to it. The prepaid invoice was later unapplied, however, the error message remains.

The prepayment invoice is accounted. What and how to resolve this issue.

Version (include the version you are using, if applicable):

23A

Code Snippet (add any code snippets that support your topic, if applicable):