How To Fix USMD1536 - Data model/entity type &1: Invalid hierarchy attribute

USMD1536 - Overview

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 536

• Message text: Data model/entity type &1: Invalid hierarchy attribute

What causes this issue?

Entity types that the system references as
<DS:DE.USMD_RELATION_HRY>hierarchy attributes</> may only have external
key assignments. However, this is not the case for entity type &V2&,
which the system references as a hierarchy attribute for the
<DS:DE.USMD_ENTITY_NOD>node entity type</> &V3& in the hierarchy of
entity type &V4&.

System Response

The system cannot activate the data model.

How to fix this error?

Change the key assignment type for entity type &V2& or reference a
different entity type for the additional entity type &V3& in the
hierarchy for entity type &V4&.

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.

USMD1536 - Details

• The SAP error message USMD1536 indicates that there is an issue with a hierarchy attribute in a data model or entity type. This error typically arises in the context of SAP Master Data Governance (MDG) when working with data models that involve hierarchical structures.
  
  Cause:
  The error message "USMD1536 Data model/entity type &1: Invalid hierarchy attribute" usually occurs due to one of the following reasons:
  
  
  Incorrect Hierarchy Definition: The hierarchy attribute defined in the data model may not be valid or properly configured. This could be due to missing or incorrect settings in the hierarchy definition.
  
  
  Data Model 
  Configuration Issues: The data model may not be correctly set up to support the hierarchy attribute. This can happen if the entity type does not have the necessary attributes defined for hierarchical relationships.
  
  
  Inconsistent Data: There may be inconsistencies in the data that violate the hierarchy structure, such as circular references or missing parent-child relationships.
  
  
  Technical Issues: There