How To Fix USMD1538 - Data model &, entity type &2: Invalid use of keys in hierarchy

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 538

• Message text: Data model &, entity type &2: Invalid use of keys in hierarchy

What causes this issue?

The key fields of the entity types in a hierarchy have to be part of the
key fields of the entity type &V3&. If it is a non-synchronized
hierarchy the hierarchy name can be used as key field as well.

System Response

The system cannot activate data model &V1&.

How to fix this error?

Change the key of &V3&, change the key of &V2&, or delete &V2& from the
list of hierarchy nodes.

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.