Incorrect reverse documents in posting run &1 &2

What causes this issue?

When checking the reversal documents, the system has identified that
they cannot be posted. The reversal process has been terminated.

System Response

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

How to fix this error?

Start report RPCIPF00 to reverse the terminated reversal process and,
after removing the error, start the reversal process again if required.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.