How To Fix USMD1A004 - Data model &1: Entity type &2 is unknown in data persistence

USMD1A004 - Overview

• Message type: E = Error

• Message class: USMD1A - Messages: Abstraction Layer

• Message number: 004

• Message text: Data model &1: Entity type &2 is unknown in data persistence

What causes this issue?

The active version of data model &V1& is not synchronous with the
generated persistence layer.

System Response

The saved data cannot be accessed.

How to fix this error?

Contact technical support.

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.

USMD1A004 - Details

• The SAP error message USMD1A004 indicates that there is an issue with the data model in the context of SAP Master Data Governance (MDG). Specifically, the error states that the entity type specified is unknown in the data persistence layer. This typically occurs when the system cannot find the definition of the entity type in the underlying database or data model.
  Causes:
  
  Missing Entity Definition: The entity type referenced in the error message may not be defined in the data model or may have been deleted or not activated.
  Incorrect Configuration: There may be a misconfiguration in the data model or the persistence layer that prevents the system from recognizing the entity type.
  Transport Issues: If the data model was recently transported from another system, there may have been issues during the transport process that led to missing or incomplete definitions.
  Version Mismatch: The version of the data model in the system may not match