Class type and object table is not a valid combination

What causes this issue?

The entered class type and object table is not a valid combination for
equipment (object table EQUI) or functional locations (object table
IFLOT).

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?

Choose a valid combination of class type and object table.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.