How To Fix RSAR151 - No levels can be calculated for the hierarchy.

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAR - Data Transfer and Metadata Maintenance

• Message number: 151

• Message text: No levels can be calculated for the hierarchy.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSAR151 - No levels can be calculated for the hierarchy. ?

  The SAP error message RSAR151, which states "No levels can be calculated for the hierarchy," typically occurs in the context of SAP BW (Business Warehouse) when dealing with hierarchies in InfoObjects. This error indicates that the system is unable to determine the levels of a hierarchy due to certain issues. Here are some common causes, solutions, and related information for this error:
  Causes:
  
  Missing Hierarchy Data: The hierarchy data might not be properly maintained or might be missing in the InfoObject.
  Incorrect Hierarchy Structure: The hierarchy structure may be incorrectly defined, leading to inconsistencies.
  Hierarchy Not Active: The hierarchy might not be activated or might be in a state that prevents it from being used.
  Data Inconsistencies: There may be inconsistencies in the data that prevent the hierarchy from being calculated correctly.
  Hierarchy Levels Not Defined: The levels of the hierarchy may not be defined correctly, or there may be no nodes available to calculate levels.
  
  Solutions:
  
  Check Hierarchy Data: Ensure that the hierarchy data is correctly maintained. You can do this by navigating to the InfoObject maintenance and checking the hierarchy settings.
  Activate Hierarchy: If the hierarchy is not activated, activate it in the InfoObject maintenance screen.
  Review Hierarchy Structure: Verify the structure of the hierarchy to ensure that it is defined correctly. Check for any missing nodes or incorrect parent-child relationships.
  Rebuild Hierarchy: If the hierarchy is corrupted, consider rebuilding it. This can be done by deleting the existing hierarchy and creating a new one.
  Check for Data Inconsistencies: Run consistency checks on the data to identify and resolve any inconsistencies that may be affecting the hierarchy.
  Use Transaction RSRHIER: You can use transaction RSRHIER to analyze and maintain hierarchies. This transaction provides tools to check the hierarchy structure and make necessary adjustments.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSRHIER (Hierarchy Maintenance) and RSA1 (Data Warehousing Workbench) for managing hierarchies and InfoObjects.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error. SAP Notes can provide specific guidance or fixes for known problems.
  Documentation: Refer to SAP documentation for detailed information on hierarchy management in BW, including best practices for defining and maintaining hierarchies.
  
  By following these steps, you should be able to diagnose and resolve the RSAR151 error in your SAP BW environment. If the issue persists, consider reaching out to SAP support for further assistance.