'&': Internal errors occurred

What causes this issue?

An error occurred during the internal check for this object. This can
happen, for example, if an object is currently locked, as this prevents
the change from being carried out. The checks were continued for the
other objects.

System Response

The status for this object is set to "Checked with errors".
This object cannot be reclassified until the error has been
eliminated.

How to fix this error?

Carry out the check again. If this error recurs, please
contact your system administrator.

Error message extract from SAP system. Copyright SAP SE.