How To Fix RS2HANA_VIEW154 - &1: Hierarchy &2 has several nodes with identical node name

SAP Error Message - Details

• Message type: E = Error

• Message class: RS2HANA_VIEW - HANA Views for BW Objects

• Message number: 154

• Message text: &1: Hierarchy &2 has several nodes with identical node name

If a hierarchy contains multiple nodes with the same node name (see H
table), it cannot be consumed via the external SAP HANA view for
characteristic with hierarchy. Error message in SAP HANA: 'Multiple
parents not allowed' or 'Invalid cycles'

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 RS2HANA_VIEW154 - &1: Hierarchy &2 has several nodes with identical node name ?

  The SAP error message RS2HANA_VIEW154 indicates that there is an issue with a hierarchy in your SAP system, specifically that there are multiple nodes within the hierarchy that share the same name. This can lead to confusion and errors when trying to process or display the hierarchy.
  Cause:
  The error is typically caused by:
  
  Duplicate Node Names: The hierarchy has been defined with multiple nodes that have the same name, which violates the uniqueness requirement for node names within a hierarchy.
  Data Integrity Issues: There may be issues with the data integrity in the underlying data source, leading to duplicate entries.
  Configuration Errors: Incorrect configuration or setup of the hierarchy in the SAP system.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Identify Duplicate Nodes:
  
  Use transaction codes like RSD1 (Data Warehousing Workbench) to check the hierarchy definition.
  Look for nodes with identical names in the hierarchy structure.
  
  
  
  Rename or Remove Duplicates:
  
  If you find duplicate nodes, you can either rename them to ensure uniqueness or remove unnecessary duplicates.
  Ensure that each node in the hierarchy has a unique name.
  
  
  
  Check Data Source:
  
  Review the underlying data source to ensure that it does not contain duplicate entries that could lead to this issue.
  Clean up the data if necessary.
  
  
  
  Rebuild the Hierarchy:
  
  If the hierarchy is complex, consider rebuilding it from scratch after ensuring that all node names are unique.
  
  
  
  Test Changes:
  
  After making changes, test the hierarchy to ensure that the error is resolved and that the hierarchy functions as expected.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidelines on managing hierarchies in your version of SAP.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered and resolved similar issues.
  Version Specifics: Be aware that the behavior and resolution steps may vary depending on the version of SAP you are using (e.g., SAP BW, SAP HANA).
  
  By following these steps, you should be able to resolve the error and ensure that your hierarchy is correctly configured.