How To Fix USMD1040 - Data model &1, entity type &2: Leading entity type &3 is invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 040

• Message text: Data model &1, entity type &2: Leading entity type &3 is invalid

What causes this issue?

Relationships with <LS>Leading</> or <LS>Qualifying</> as the
relationship type are not allowed between entity types with the
<DS:DE.USMD_USAGE_TYPE>storage and use type</> <LS>1</> or <LS>2</> and
entity types with the storage and use type <LS>3</>.

System Response

The data model cannot be saved or activated.

How to fix this error?

Delete the invalid relationship.

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message USMD1040 - Data model &1, entity type &2: Leading entity type &3 is invalid ?

  The SAP error message USMD1040 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 and their relationships. Here’s a breakdown of the cause, potential solutions, and related information for this error:
  Cause:
  
  
  Invalid Leading Entity Type: The error indicates that the leading entity type specified in the data model is not valid. This could be due to:
  
  The leading entity type not being defined in the data model.
  A mismatch in the entity type names or IDs.
  The leading entity type being deactivated or deleted.
  
  
  
  Configuration Issues: There may be issues in the configuration of the data model, such as incorrect relationships between entity types or missing dependencies.
  
  
  Transport Issues: If the data model was transported from one system to another, there might be inconsistencies or missing components in the target system.
  
  
  Solution:
  
  
  Check Entity Type Definitions:
  
  Verify that the leading entity type (as indicated in the error message) is correctly defined in the data model.
  Ensure that the entity type names and IDs are correctly referenced.
  
  
  
  Review Data Model Configuration:
  
  Go to the MDG data model configuration and check the relationships between the entity types.
  Ensure that the leading entity type is correctly set up and that all necessary attributes and relationships are defined.
  
  
  
  Activate/Reactivate Entity Types:
  
  If the leading entity type is inactive, reactivate it in the data model configuration.
  
  
  
  Transport Consistency:
  
  If the issue arose after a transport, check the transport logs for any errors or warnings.
  Ensure that all necessary objects related to the data model have been transported correctly.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific version of MDG you are using for any known issues or additional troubleshooting steps.
  
  
  
  Debugging:
  
  If you have access to the development environment, consider debugging the process to identify where the error is being triggered.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  MDG Configuration Guide: Review the configuration guide for SAP MDG to ensure that all steps have been followed correctly.
  Community Forums: Consider searching or posting in SAP community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the issue causing the USMD1040 error in your SAP MDG environment.