How To Fix UJA_EXCEPTION101 - Duplicate node &1 in hierarchy &2 in &3

SAP Error Message - Details

• Message type: E = Error

• Message class: UJA_EXCEPTION - BPC: Admin exception message class

• Message number: 101

• Message text: Duplicate node &1 in hierarchy &2 in &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message UJA_EXCEPTION101 - Duplicate node &1 in hierarchy &2 in &3 ?

  The SAP error message UJA_EXCEPTION101 indicates that there is a duplicate node in a hierarchy. This typically occurs in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence) when dealing with hierarchies in InfoObjects, such as characteristics or dimensions.
  Cause:
  The error arises when the system detects that a node (or member) is defined more than once within the same hierarchy. This can happen due to:
  
  Data Entry Errors: Manual entry of nodes that are not unique.
  Data Upload Issues: When loading data from external sources, duplicates may be introduced if the source data is not properly cleansed.
  Hierarchy Maintenance: During the maintenance of hierarchies, if nodes are copied or moved incorrectly, duplicates can be created.
  
  Solution:
  To resolve the UJA_EXCEPTION101 error, you can follow these steps:
  
  
  Identify Duplicates:
  
  Use transaction RSH1 (Hierarchy Maintenance) or RSH2 (Hierarchy Display) to view the hierarchy in question.
  Check for duplicate entries in the hierarchy.
  
  
  
  Remove Duplicates:
  
  If duplicates are found, you can either delete the duplicate nodes or merge them if they represent the same entity.
  Ensure that the hierarchy structure remains valid after making changes.
  
  
  
  Data Validation:
  
  If the duplicates were caused by data uploads, ensure that the source data is validated and cleansed before re-uploading.
  Use tools like Data Services or other ETL processes to ensure data integrity.
  
  
  
  Rebuild Hierarchy:
  
  In some cases, it may be necessary to rebuild the hierarchy from scratch if the duplicates are widespread and cannot be easily resolved.
  
  
  
  Check for Dependencies:
  
  Ensure that there are no dependencies or references to the duplicate nodes that could cause issues when they are removed.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSH1, RSH2, and RSA1 (Data Warehousing Workbench) for managing hierarchies.
  SAP Notes: Check SAP Notes for any known issues or patches related to hierarchy management.
  Documentation: Review SAP documentation on hierarchy management and best practices to avoid future occurrences of this error.
  
  By following these steps, you should be able to resolve the UJA_EXCEPTION101 error and maintain a clean and functional hierarchy in your SAP BW/BI environment.