Object type & is implemented but not released

What causes this issue?

You have selected an object type which has been implemented, but not
yet released. Functions for unreleased objects can be changed in a
later release or deleted.

System Response

The object type can be used, but it is not guaranteed that the
functionality will be available after an upgrade.

How to fix this error?

Please check whether another object type can be used.

Error message extract from SAP system. Copyright SAP SE.