How To Fix RSRV145 - The hierarchy node &1 from type RESTNODE is not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: RSRV -

• Message number: 145

• Message text: The hierarchy node &1 from type RESTNODE is not unique

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSRV145 - The hierarchy node &1 from type RESTNODE is not unique ?

  The SAP error message RSRV145 indicates that there is a problem with the uniqueness of a hierarchy node in a reporting structure, specifically for a RESTNODE type. This error typically arises in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence) when dealing with hierarchies in InfoObjects.
  Cause:
  The error occurs when the system detects that there are multiple entries for a hierarchy node that should be unique. This can happen due to:
  
  Duplicate Entries: There are multiple entries in the hierarchy that have the same key or identifier.
  Incorrect Hierarchy Structure: The hierarchy may have been incorrectly defined or modified, leading to conflicts.
  Data Load Issues: During data loading or transformation processes, duplicates may have been introduced.
  
  Solution:
  To resolve the RSRV145 error, you can follow these steps:
  
  
  Check Hierarchy Definition:
  
  Go to the hierarchy definition in the SAP BW system and verify that each node is defined uniquely.
  Ensure that there are no duplicate nodes with the same identifier.
  
  
  
  Use Transaction RSRV:
  
  Execute transaction RSRV (Data Warehousing Workbench) to analyze the hierarchy.
  Use the "Check Hierarchy" function to identify the specific nodes that are causing the issue.
  
  
  
  Correct Duplicates:
  
  If duplicates are found, you will need to either delete or merge the duplicate nodes to ensure that each node is unique.
  Make sure to update any references to the hierarchy in reports or queries.
  
  
  
  Rebuild the Hierarchy:
  
  If the hierarchy is too complex or corrupted, consider rebuilding it from scratch, ensuring that all nodes are unique.
  
  
  
  Data Consistency Check:
  
  After making changes, perform a consistency check to ensure that the hierarchy is functioning correctly and that there are no further issues.
  
  
  
  Transport Requests:
  
  If the hierarchy was transported from another system, ensure that the transport did not introduce duplicates.
  
  
  
  Related Information:
  
  Transaction Codes: RSRV (for checking and repairing data), RSA1 (Data Warehousing Workbench), RSH1 (Hierarchy Maintenance).
  Documentation: Refer to SAP Help documentation for detailed information on managing hierarchies in BW.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to hierarchy nodes and provide patches or updates.
  
  By following these steps, you should be able to resolve the RSRV145 error and ensure that your hierarchy nodes are unique and correctly defined.