How To Fix HPC029 - No root hierarchy level in hierarchy type &1 exists

SAP Error Message - Details

• Message type: E = Error

• Message class: HPC - Classification-Based Product Hierarchy

• Message number: 029

• Message text: No root hierarchy level in hierarchy type &1 exists

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message HPC029 - No root hierarchy level in hierarchy type &1 exists ?

  The SAP error message HPC029 "No root hierarchy level in hierarchy type &1 exists" typically occurs in the context of SAP's Hierarchy Management, particularly when dealing with hierarchical data structures in applications like SAP HANA or SAP BW (Business Warehouse). This error indicates that the system is unable to find a root level in the specified hierarchy type, which is necessary for the hierarchy to function correctly.
  Cause:
  
  Missing Root Node: The hierarchy type specified does not have a defined root node. A root node is essential as it serves as the starting point for the hierarchy.
  Incorrect Hierarchy Type: The hierarchy type specified in the error message may not be correctly configured or may not exist in the system.
  Data Inconsistency: There may be inconsistencies in the data that prevent the hierarchy from being properly recognized or displayed.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to view or access the hierarchy.
  
  Solution:
  
  
  Check Hierarchy Configuration:
  
  Go to the hierarchy management transaction (e.g., RSH1 for creating hierarchies) and verify that the hierarchy type specified in the error message exists and is correctly configured.
  Ensure that there is a root node defined for the hierarchy type.
  
  
  
  Create or Adjust Root Node:
  
  If there is no root node, create one. This can typically be done in the hierarchy maintenance transaction.
  Ensure that the root node is properly linked to other nodes in the hierarchy.
  
  
  
  Validate Data:
  
  Check the underlying data for the hierarchy to ensure that it is consistent and correctly structured.
  Look for any missing or incorrectly linked nodes that could be causing the issue.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to access and view the hierarchy. This can be checked in the user roles and authorizations.
  
  
  
  Rebuild the Hierarchy:
  
  If the hierarchy is corrupted or not functioning as expected, consider rebuilding it from scratch or restoring it from a backup if available.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidance on hierarchy management and troubleshooting.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSH1 (Hierarchy Maintenance), RSH2 (Hierarchy Display), and RSH3 (Hierarchy Deletion).
  SAP Notes: Check SAP Notes for any known issues or patches related to hierarchy management that might address this error.
  Support: If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.
  
  By following these steps, you should be able to resolve the HPC029 error and ensure that your hierarchy is functioning correctly.