How To Fix USMD1534 - Data model &1, entity type &2: Type of key assignment changed

USMD1534 - Overview

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 534

• Message text: Data model &1, entity type &2: Type of key assignment changed

What causes this issue?

Data model &V1& is already active and entity type &V2& is contained in
the active version. In this case, you may no longer change the type of
key assignment for entity type &V2&.

System Response

The system cannot activate data model &V1&.

How to fix this error?

Reset the type of key assignment for entity type &V2& in data model &V1&
to #&V3&&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.

USMD1534 - Details

• The SAP error message USMD1534 typically occurs in the context of SAP Master Data Governance (MDG) when there is an inconsistency in the key assignment type for a specific entity type in a data model. This error indicates that the type of key assignment for the specified entity has changed, which can lead to issues in data consistency and integrity.
  
  Cause:
  
  Change in Key Assignment: The key assignment type for an entity type has been modified in the data model. This could happen due to changes in the configuration or design of the data model.
  Inconsistent Data: Existing data may not conform to the new key assignment type, leading to conflicts when trying to process or validate the data.
  Model Versioning: If there are multiple versions of the data model, the error may arise from trying to use an outdated version that does not align with the current key assignment rules.
  
  
  Solution:
  
  Review Data Model Changes: