How To Fix USMD1073 - Data model &1, entity type &2: Additional entity type &3 not allowed

USMD1073 - Overview

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 073

• Message text: Data model &1, entity type &2: Additional entity type &3 not allowed

What causes this issue?

Leading entity types of entity types with usage #hierarchy name# cannot
be specified as additional entity types of the same hierarchy-defining
entity type.

System Response

The data model cannot be saved.

How to fix this error?

Remove entity type &V3& from the list of additional entity types of the
hierarchy-defining entity type &V2&.

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.

USMD1073 - Details

• The SAP error message USMD1073 typically occurs in the context of SAP Master Data Governance (MDG) when there is an issue with the data model configuration, specifically related to entity types. The error message indicates that an additional entity type is not allowed in the specified data model and entity type.
  
  Cause:
  The error can arise due to several reasons:
  
  Incorrect Configuration: The data model may be incorrectly configured, allowing for an entity type that is not permitted in the context of the specified data model.
  Data Model Restrictions: The data model may have specific restrictions on which entity types can be used together. If you attempt to add an entity type that is not allowed, this error will be triggered.
  Versioning Issues: If there are changes in the data model or entity types that have not been properly updated or synchronized, it may lead to this error.
  Custom Development: If there are custom developments or