PAROB empty, PFKBER/PGEBER or PGRANT_NBR filled: structure of COEP wrong

What causes this issue?

This is a program error.

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?

Try to reproduce this message, then enter a problem message by
specifying example data.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.