How To Fix USMD1521 - Mod./ent.&1, node ent.&2: Assignment of hierarchy attributes not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 521

• Message text: Mod./ent.&1, node ent.&2: Assignment of hierarchy attributes not allowed

What causes this issue?

Node entity types of usage <LS>Hierarchy Names</> cannot be assigned any
<LS>hierarchy attributes</> or <LS>hierarchy attributes from reference
</>.

System Response

The data model will not be saved.

How to fix this error?

Remove the assigned hierarchy attributes.

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 USMD1521 - Mod./ent.&1, node ent.&2: Assignment of hierarchy attributes not allowed ?

  The SAP error message USMD1521 typically occurs in the context of Master Data Governance (MDG) when there is an issue with the assignment of hierarchy attributes to a specific node in a hierarchy. This error indicates that the system does not allow the assignment of certain attributes to the specified node.
  Cause:
  The error message "USMD1521 Mod./ent.&1, node ent.&2: Assignment of hierarchy attributes not allowed" can be caused by several factors:
  
  
  Hierarchy Structure: The node you are trying to assign attributes to may not be designed to accept those attributes based on the hierarchy structure defined in the system.
  
  
  Attribute Configuration: The attributes you are trying to assign may not be configured correctly in the system or may not be allowed for the specific node type.
  
  
  Data Model Issues: There may be inconsistencies or misconfigurations in the data model that prevent the assignment of attributes to the hierarchy node.
  
  
  Authorization Issues: The user may not have the necessary authorizations to perform the assignment of attributes to the hierarchy node.
  
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Hierarchy Configuration: Review the hierarchy configuration in the MDG system to ensure that the node you are working with is allowed to have the attributes you are trying to assign. This may involve checking the data model and the specific node type.
  
  
  Review Attribute Settings: Verify the settings for the attributes you are trying to assign. Ensure that they are correctly defined and that they are compatible with the node type.
  
  
  Data Model Validation: Validate the data model to ensure there are no inconsistencies or errors that could be causing the issue. You may need to consult with your SAP MDG administrator or a technical consultant for this.
  
  
  Check Authorizations: Ensure that the user performing the action has the necessary authorizations to assign attributes to the hierarchy node. This may involve checking user roles and permissions in the SAP system.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific version of MDG you are using. There may be specific guidelines or known issues related to this error message.
  
  
  Debugging: If the issue persists, consider enabling debugging to trace the exact point of failure in the process. This may provide more insight into why the assignment is not allowed.
  
  
  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.
  MDG Documentation: Review the official SAP MDG documentation for best practices and guidelines on managing hierarchies and attributes.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.