Data model &1, entity type &2: Relationship is recursive

What causes this issue?

There is a recursive relationship for entity type &V2& with <LS>Leading
</> or <LS>Qualifying</> as the relatiohsip type. This is <ZH>not
</>allowed.

System Response

The data model cannot be saved or activated.

How to fix this error?

Change the relationships as required.

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.