How To Fix ESH_OM_OBJ_MODEL_REP008 - There must be exactly one root node

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_OM_OBJ_MODEL_REP - Object Model Repository

• Message number: 008

• Message text: There must be exactly one root node

What causes this issue?

Each object must have exactly one root node.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Correct your entries accordingly.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_OM_OBJ_MODEL_REP008 - There must be exactly one root node ?

  The SAP error message ESH_OM_OBJ_MODEL_REP008 indicates that there is an issue with the object model representation in the SAP Enterprise Search (SAP ESH) framework. Specifically, the error states that there must be exactly one root node in the object model, but the system has detected either none or multiple root nodes.
  Cause:
  
  Incorrect Configuration: The object model may be incorrectly configured, leading to multiple root nodes being defined or no root node at all.
  Data Integrity Issues: There may be inconsistencies in the data that define the object model, causing the system to misinterpret the structure.
  Changes in Object Model: If there have been recent changes to the object model (e.g., adding or removing nodes), it may not have been updated correctly in the system.
  Custom Development: If there are custom developments or enhancements in the object model, they may not adhere to the expected structure.
  
  Solution:
  
  
  Check Object Model Configuration:
  
  Go to the configuration settings for the object model in the SAP ESH administration.
  Ensure that there is exactly one root node defined. If there are multiple root nodes, consolidate them into a single root node.
  
  
  
  Validate Data Integrity:
  
  Review the data that defines the object model to ensure that it is consistent and correctly structured.
  Look for any orphaned nodes or incorrect relationships that may lead to multiple roots.
  
  
  
  Rebuild the Object Model:
  
  If the configuration appears correct but the error persists, consider rebuilding the object model. This can often resolve issues related to inconsistencies.
  
  
  
  Check for Custom Code:
  
  If there are custom developments, review the code to ensure it complies with the expected structure of the object model.
  Make necessary adjustments to ensure that the object model adheres to the requirement of having a single root node.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific version of SAP ESH you are using for any known issues or additional troubleshooting steps.
  
  
  
  Contact SAP Support:
  
  If the issue cannot be resolved through the above steps, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  SAP ESH Documentation: Review the official SAP documentation for Enterprise Search to understand the object model structure and configuration.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on object model configuration.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and resolve the issue causing the ESH_OM_OBJ_MODEL_REP008 error.