The variant & (exclusion) of layout module & for unit & will be deleted

What causes this issue?

You have deleted the assignment of a material and of a unit of measure
to the basic version of a layout module. However, there are still
assignments to layout module variants that exclude the material
(exclusion indicator set). For consistency, these variants must also
be deleted.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.