Object &1 exists in the check indicator, but not in SU21

What causes this issue?

The specified authorization object is not defined in this system.
Since authorization object that do not exist locally are excluded by the
automatic comparison during role maintenance, the missing existence
characteristic can lead to missing authorizations in roles.

System Response

This message indicates a potential problem in authorization
administration.

How to fix this error?

If the authorization object is (still) relevant in your authorization
concept, use transaction SU21 to create it.
Otherwise, no change is required, since the profile generator ignores
entries of this type.
If you are not responsible for the missing authorization object, contact
the responsible software vendor.

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.