How To Fix UGMD304 - Hierarchy &1 has more than one root node

SAP Error Message - Details

• Message type: E = Error

• Message class: UGMD - FIN Master Data: Messages

• Message number: 304

• Message text: Hierarchy &1 has more than one root node

What causes this issue?

You defined hierarchy &V1& with multiple root nodes. However, the
hierarchy-defining characteristic only allows one root node per
hierarchy.

System Response

Processing terminated

How to fix this error?

Correct the hierarchy definition.

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 UGMD304 - Hierarchy &1 has more than one root node ?

  The SAP error message UGMD304 indicates that there is an issue with a hierarchy structure in your SAP system. Specifically, it means that the hierarchy you are trying to create or modify has more than one root node, which is not allowed in a proper hierarchical structure. A hierarchy should have a single root node from which all other nodes branch out.
  Cause:
  The error can occur due to several reasons:
  
  Incorrect Data Entry: When creating or modifying a hierarchy, multiple nodes may have been incorrectly designated as root nodes.
  Data Import Issues: If you are importing hierarchy data from an external source, the data may not be structured correctly, leading to multiple root nodes.
  Hierarchy Configuration Errors: There may be configuration issues in the hierarchy settings that allow for multiple root nodes.
  
  Solution:
  To resolve the UGMD304 error, you can take the following steps:
  
  
  Review the Hierarchy Structure:
  
  Check the hierarchy you are trying to create or modify. Ensure that there is only one root node.
  Use transaction codes like RSH1 (for creating hierarchies) or RSH2 (for displaying hierarchies) to review the structure.
  
  
  
  Identify and Remove Extra Root Nodes:
  
  Identify any nodes that are incorrectly set as root nodes.
  Adjust the hierarchy by either deleting or reassigning these nodes to ensure that only one root node remains.
  
  
  
  Data Validation:
  
  If you are importing data, validate the data structure before importing it into SAP. Ensure that the hierarchy data adheres to the single root node requirement.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for guidance on creating and managing hierarchies to ensure compliance with best practices.
  
  
  
  Testing:
  
  After making changes, test the hierarchy to ensure that it functions correctly without errors.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes for managing hierarchies, such as RSH1, RSH2, and RSH3.
  SAP Notes: Check SAP Notes for any known issues or patches related to hierarchy management that may provide additional insights or solutions.
  User Roles and Permissions: Ensure that you have the necessary permissions to create or modify hierarchies in the SAP system.
  
  By following these steps, you should be able to resolve the UGMD304 error and successfully manage your hierarchy in SAP.