How To Fix USMD1041 - Data model &1, entity type &2: Leading entity types are invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 041

• Message text: Data model &1, entity type &2: Leading entity types are invalid

What causes this issue?

For entity types with storage and use type <LS>3</> for which the check
table is predefined by the data element or domain, the other key fields
in the check table must be mapped using relationships with <LS>Leading
</> as the relationship type. There is <ZH>not</> a check table for the
entity type, however. <ZH>No</> leading entity types can therefore be
defined using relationships.

System Response

The data model cannot be saved or activated.

How to fix this error?

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

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 USMD1041 - Data model &1, entity type &2: Leading entity types are invalid ?

  The SAP error message USMD1041 indicates that there is an issue with the data model configuration in the SAP Master Data Governance (MDG) system. Specifically, it points to a problem with the leading entity types in the data model for a particular entity type.
  Cause:
  The error typically arises due to one of the following reasons:
  
  
  Invalid Configuration: The leading entity types defined in the data model are not valid or do not exist. This can happen if the entity types have been deleted or if there is a mismatch in the configuration.
  
  
  Incorrect Relationships: The relationships between the leading entity types and the entity type in question may not be correctly defined, leading to inconsistencies.
  
  
  Data Model Changes: If there have been recent changes to the data model, such as adding or removing entity types, it may lead to this error if the changes were not properly reflected in the configuration.
  
  
  Solution:
  To resolve the error, you can follow these steps:
  
  
  Check Data Model Configuration:
  
  Go to the MDG data model configuration in the SAP system.
  Verify that the leading entity types for the specified entity type are correctly defined and exist in the system.
  
  
  
  Validate Relationships:
  
  Ensure that the relationships between the leading entity types and the entity type are correctly set up.
  Check for any inconsistencies or missing relationships that could lead to this error.
  
  
  
  Review Recent Changes:
  
  If there have been recent changes to the data model, review those changes to ensure that they were implemented correctly.
  If necessary, revert any changes that may have caused the issue.
  
  
  
  Transport Requests:
  
  If the changes were made in a development environment, ensure that the transport requests have been properly moved to the quality or production environment.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for Master Data Governance to understand the requirements for configuring data models and entity types.
  
  
  
  Check for Notes and Patches:
  
  Look for any SAP Notes or patches that may address this specific error or provide guidance on resolving similar issues.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like MDGIMG to access the configuration settings for Master Data Governance.
  SAP Help Portal: The SAP Help Portal provides detailed documentation on configuring data models and troubleshooting common errors in MDG.
  Community Forums: SAP Community forums can be a valuable resource for finding solutions to similar issues faced by other users.
  
  If the issue persists after following these steps, it may be beneficial to engage with SAP support for further assistance.