Error; non-finalized run for PBA & was found for previous month &

What causes this issue?

A non-finalized version of the PBA was found for a month previous to
the month you are currently running.

System Response

PBA cannot be generated.

How to fix this error?

There are two options:
1. Finalize the previous PBA run, then re-run month you are currently
running.
OR
2. Delete the previous PBA run and the previous month's volumes will be
rolled to the next month.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.