How To Fix USMD1620 - Data model &1, entity type &2: Attribute &3 is a key field

USMD1620 - Overview

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 620

• Message text: Data model &1, entity type &2: Attribute &3 is a key field

What causes this issue?

The attribute &V3& was assigned to entity type &V2& in model &V1&.
However, the entity type already has a key field with the same name.
Within an entity type, no attribute can have the same name as a key
field.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

The model cannot be activated.
ELSE
The model cannot be saved.
ENDIF

How to fix this error?

Enter a different name for the attribute.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message USMD1620 - Data model &1, entity type &2: Attribute &3 is a key field ?

  The SAP error message USMD1620 typically occurs in the context of SAP Master Data Governance (MDG) when there is an issue related to the data model configuration, specifically concerning key fields in an entity type. Here’s a breakdown of the cause, potential solutions, and related information for this error message:
  
  Cause:
  The error message indicates that there is an attempt to perform an operation (such as creating, updating, or deleting) on an attribute that is defined as a key field in the data model. Key fields are essential for uniquely identifying records in a database table, and certain operations may not be allowed on these fields due to their critical role in maintaining data integrity.
  
  Solution:
  
  
  Review Data Model Configuration:
  
  Check the data model configuration in the SAP MDG system. Ensure that the attributes defined as key fields are correctly set up and that any operations you are trying to perform are valid for those