How To Fix USMD1312 - Data model &1: Entity type &2 used as hierarchy node

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 312

• Message text: Data model &1: Entity type &2 used as hierarchy node

What causes this issue?

Entity type &V2& is used as a hierarchy node for entity type &V3&.
Therefore, you can only hide both entity type &V2& and entity type &V3&.

System Response

The system does not save the settings.

How to fix this error?

Remove the entry for entity type &V2& or add the entry for 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 USMD1312 - Data model &1: Entity type &2 used as hierarchy node ?

  The SAP error message USMD1312 typically occurs in the context of SAP Master Data Governance (MDG) when there is an issue with the data model configuration, specifically related to the use of entity types in hierarchy nodes.
  Cause:
  The error message "Data model &1: Entity type &2 used as hierarchy node" indicates that an entity type that is not intended to be used as a hierarchy node is being referenced as such in the data model. This can happen due to:
  
  Incorrect Configuration: The entity type may not be configured correctly in the data model to support hierarchical relationships.
  Modeling Errors: There may be a misunderstanding or misconfiguration in the way the data model is designed, leading to the use of an inappropriate entity type as a hierarchy node.
  Incompatibility: The entity type may not have the necessary attributes or relationships defined to function as a hierarchy node.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Data Model Configuration:
  
  Check the data model configuration in the SAP MDG system.
  Ensure that the entity type in question is intended to be used as a hierarchy node.
  
  
  
  Adjust Entity Type Settings:
  
  If the entity type is not meant to be a hierarchy node, remove it from the hierarchy configuration.
  If it should be a hierarchy node, ensure that it is properly defined with the necessary attributes and relationships.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for Master Data Governance to understand the requirements for entity types used in hierarchies.
  Look for guidelines on how to configure entity types and hierarchies correctly.
  
  
  
  Testing:
  
  After making changes, test the data model to ensure that the error is resolved and that the hierarchy functions as expected.
  
  
  
  Seek Help from SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support for assistance. Provide them with the details of the error message and the context in which it occurs.
  
  
  
  Related Information:
  
  SAP MDG Documentation: Review the official SAP MDG documentation for best practices on data modeling and hierarchy configuration.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  Transaction Codes: Familiarize yourself with relevant transaction codes (like MDGIMG) that can help you navigate the configuration settings in SAP MDG.
  
  By following these steps, you should be able to identify the root cause of the USMD1312 error and implement the necessary changes to resolve it.