How To Fix ESH_OM_OBJ_MODEL_REP868 - Hierarchy of node attribute groups contains a loop

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_OM_OBJ_MODEL_REP - Object Model Repository

• Message number: 868

• Message text: Hierarchy of node attribute groups contains a loop

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_OM_OBJ_MODEL_REP868 - Hierarchy of node attribute groups contains a loop ?

  The SAP error message ESH_OM_OBJ_MODEL_REP868 indicates that there is a loop in the hierarchy of node attribute groups within the Enterprise Search (ESH) Object Model. This typically occurs when the configuration of the attribute groups is set up in such a way that it creates a circular reference, which can lead to issues in data retrieval and processing.
  Cause:
  
  Circular Reference: The most common cause of this error is a circular reference in the hierarchy of attribute groups. For example, if Attribute Group A references Attribute Group B, and Attribute Group B references Attribute Group A, this creates a loop.
  Incorrect Configuration: Misconfiguration of the attribute groups in the ESH settings can lead to this issue. This can happen during the setup or modification of the object model.
  Data Model Changes: Changes made to the data model or attribute groups without proper validation can also introduce loops.
  
  Solution:
  
  Review Attribute Group Configuration: Check the configuration of the attribute groups in the ESH settings. Look for any circular references and correct them. Ensure that each attribute group is only referencing other groups in a linear fashion without creating loops.
  Use Transaction Codes: Utilize transaction codes like EHS1 or EHS2 to access the ESH configuration and review the hierarchy of attribute groups.
  Validate Changes: After making changes, validate the configuration to ensure that no loops exist. This can often be done through a validation tool or by manually checking the hierarchy.
  Consult Documentation: Refer to SAP documentation or notes related to ESH configuration for best practices and guidelines on setting up attribute groups.
  Testing: After resolving the issue, perform thorough testing to ensure that the changes have resolved the error and that the system behaves as expected.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or patches related to this error.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed.
  System Logs: Review system logs for any additional error messages or warnings that may provide context to the issue.
  
  If the problem persists after following these steps, it may be beneficial to reach out to SAP support for further assistance.