How To Fix UPS1021 - Hierarchy cannot contain more than one root text node

SAP Error Message - Details

• Message type: E = Error

• Message class: UPS1 - SEM-BPS Status and Tracking System Messages

• Message number: 021

• Message text: Hierarchy cannot contain more than one root text node

What causes this issue?

Hierarchy cannot contain text nodes. Text nodes are language-specific
and are not clear. As a result, no user assignment can take place.

System Response

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

How to fix this error?

Select a hierarchy without text nodes.

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 UPS1021 - Hierarchy cannot contain more than one root text node ?

  The SAP error message UPS1021, which states "Hierarchy cannot contain more than one root text node," typically occurs in the context of SAP systems that utilize hierarchies, such as SAP BW (Business Warehouse) or SAP HANA. This error indicates that the hierarchy structure you are trying to create or modify has more than one root node, which is not allowed.
  Cause:
  The error is caused by the following scenarios:
  
  Multiple Root Nodes: You have defined multiple nodes at the top level of the hierarchy, which violates the requirement that a hierarchy can only have one root node.
  Incorrect Data Structure: The data being imported or the structure being defined may have been incorrectly set up, leading to multiple entries being treated as root nodes.
  Hierarchy Configuration Issues: There may be issues in the configuration of the hierarchy itself, such as incorrect parent-child relationships.
  
  Solution:
  To resolve the UPS1021 error, you can take the following steps:
  
  
  Review Hierarchy Structure:
  
  Check the hierarchy structure you are trying to create or modify. Ensure that there is only one root node.
  If you find multiple nodes at the top level, decide which one should be the root and adjust the others accordingly.
  
  
  
  Adjust Parent-Child Relationships:
  
  Ensure that all nodes in the hierarchy have a clear parent-child relationship. Each node (except the root) should have exactly one parent.
  If necessary, restructure the hierarchy to ensure that all nodes are properly linked.
  
  
  
  Data Validation:
  
  If you are importing data to create the hierarchy, validate the data source to ensure it does not contain multiple entries that could be interpreted as root nodes.
  Clean up the data to ensure that it adheres to the hierarchy requirements.
  
  
  
  Use Hierarchy Maintenance Tools:
  
  Utilize SAP's hierarchy maintenance tools to visualize and manage the hierarchy structure. This can help identify issues more easily.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources specific to the version of SAP you are using for additional guidance on hierarchy management.
  
  
  
  Testing:
  
  After making the necessary adjustments, test the hierarchy creation or modification again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to hierarchy management that might address known issues.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Training and Documentation: Consider reviewing training materials or documentation on hierarchy management in SAP to better understand the requirements and best practices.
  
  By following these steps, you should be able to resolve the UPS1021 error and successfully manage your hierarchy in SAP.