How To Fix /SAPAPO/OO_REL028 - Error saving hierarchy (Check hierarchy structure)

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OO_REL -

• Message number: 028

• Message text: Error saving hierarchy (Check hierarchy structure)

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OO_REL028 - Error saving hierarchy (Check hierarchy structure) ?

  The SAP error message /SAPAPO/OO_REL028 typically occurs in the context of SAP Advanced Planning and Optimization (APO) when there is an issue with saving a hierarchy structure. This error can arise due to various reasons related to the hierarchy's configuration or data integrity.
  Causes:
  
  Invalid Hierarchy Structure: The hierarchy may have invalid nodes or relationships that do not conform to the expected structure.
  Missing Data: Required data for certain nodes in the hierarchy may be missing or incomplete.
  Circular References: There may be circular references within the hierarchy, which can prevent it from being saved.
  Authorization Issues: The user may not have the necessary authorizations to modify or save the hierarchy.
  Technical Issues: There could be underlying technical issues, such as database locks or inconsistencies in the data model.
  
  Solutions:
  
  Check Hierarchy Structure: Review the hierarchy structure for any inconsistencies, such as missing nodes or incorrect relationships. Ensure that all nodes are properly defined and connected.
  Validate Data: Ensure that all required data for the hierarchy nodes is present and correctly formatted. This includes checking attributes and values associated with each node.
  Eliminate Circular References: Inspect the hierarchy for any circular references and resolve them by restructuring the hierarchy.
  Review Authorizations: Check the user’s authorizations to ensure they have the necessary permissions to save changes to the hierarchy.
  Technical Checks: If the issue persists, check for any technical issues such as database locks or inconsistencies. You may need to consult with your SAP Basis team to investigate further.
  Use Transaction Codes: Utilize relevant transaction codes (like /SAPAPO/HEIR for hierarchy maintenance) to analyze and correct the hierarchy structure.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common errors.
  Transaction Logs: Review transaction logs for additional error messages or warnings that may provide more context about the issue.
  Documentation: Refer to SAP documentation for guidelines on hierarchy management in APO, which may provide insights into best practices and common pitfalls.
  
  If the problem continues after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance, providing them with detailed information about the error and the steps you have already taken.