How To Fix USMD1535 - Data model &1, entity type &2: Invalid use in hierarchy

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 535

• Message text: Data model &1, entity type &2: Invalid use in hierarchy

What causes this issue?

The hierarchy for entity type &V2& has an additional entity type &V3&
that uses the setting &V4& and the key assignment <LS>Key cannot be
changed, no internal key assignment.</> However, all entity types used
in a hierarchy (except for the entity type on which the hierarchy is
defined), must have the key assignment <LS>Key cannot be changed, no
internal key assignment.</>

System Response

The system cannot activate the data model &V1&

How to fix this error?

Change the type of key assignment for the entity type &V3&

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 USMD1535 - Data model &1, entity type &2: Invalid use in hierarchy ?

  The SAP error message USMD1535 typically indicates that there is an issue with the hierarchy structure in the data model for a specific entity type. This error can occur in the context of SAP Master Data Governance (MDG) when trying to manage or maintain hierarchical data.
  Cause:
  The error message "USMD1535 Data model &1, entity type &2: Invalid use in hierarchy" usually arises due to one of the following reasons:
  
  
  Invalid Hierarchical Structure: The entity type you are trying to use in a hierarchy may not be allowed to be part of that hierarchy due to its configuration or the rules defined in the data model.
  
  
  Incorrect Configuration: The data model may not be correctly configured to support the hierarchical relationship you are trying to establish. This could be due to missing or incorrect settings in the data model configuration.
  
  
  Data Integrity Issues: There may be existing data that violates the hierarchy rules, such as circular references or missing parent-child relationships.
  
  
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to perform actions related to the hierarchy.
  
  
  Solution:
  To resolve the USMD1535 error, you can take the following steps:
  
  
  Check Data Model Configuration:
  
  Review the configuration of the data model in SAP MDG. Ensure that the entity type you are working with is correctly defined to be part of a hierarchy.
  Verify the hierarchy settings and ensure that the relationships between entities are correctly established.
  
  
  
  Validate Hierarchical Data:
  
  Check the existing data for the entity type to ensure that there are no violations of the hierarchy rules. Look for circular references or missing parent-child relationships.
  Use transaction codes like MDG_MAT or MDG_BS to analyze the data and identify any inconsistencies.
  
  
  
  Review Authorizations:
  
  Ensure that the user has the necessary authorizations to work with the hierarchy. Check the roles and authorizations assigned to the user.
  
  
  
  Consult Documentation:
  
  Refer to the SAP Help documentation for Master Data Governance to understand the specific requirements and configurations for hierarchical data models.
  
  
  
  Testing:
  
  After making the necessary changes, test the hierarchy functionality again to ensure that the error is resolved.
  
  
  
  Seek Support:
  
  If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific configuration and data model.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Training and Documentation: Consider training sessions or documentation on SAP MDG and hierarchical data management to better understand the concepts and configurations involved.
  
  By following these steps, you should be able to identify and resolve the cause of the USMD1535 error in your SAP environment.