No classifiable objects defined

What causes this issue?

No classifiable objects are defined.
Before you can classify an object, you must define the object type
concerned (for example, material, document, task list) as classifiable
in the IMG for <ZH>Classification</>. Only then can you assign objects
of this object type to classes. The object type is accessed via its
object table in the database (for example, MARA for material).

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?

If you want to make the required settings now, you can call the IMG for
classification from here. For detailed information on how to define
objects types as classifiable, see the Implementation Guide for the
<LS>Classification System</>:
<DS:SIMG.SIMG_CFMENUO000O1CL>Proceed</>

Error message extract from SAP system. Copyright SAP SE.