How To Fix ESH_OM_OBJ_MODEL_REP018 - No relation specified

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_OM_OBJ_MODEL_REP - Object Model Repository

• Message number: 018

• Message text: No relation specified

What causes this issue?

You have not specified a relation in a navigation path step.

System Response

The step is invalid.

How to fix this error?

Insert a relation connecting the two nodes in the step.

Procedure for System Administrators

If you cannot enter a relation (because the navigation path is
generated)<(>,<)> inform SAP.

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

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_REP018 - No relation specified ?

  The SAP error message ESH_OM_OBJ_MODEL_REP018: No relation specified typically occurs in the context of the SAP Enterprise Search or SAP HANA Search functionalities. This error indicates that there is a problem with the configuration of the object model, specifically that a required relationship between objects has not been defined.
  Cause:
  
  Missing Relationship Definition: The error usually arises when a relationship that is expected in the object model is not defined. This could be due to incomplete configuration or a missing entry in the object model.
  Incorrect Configuration: If the object model is not set up correctly, it may lead to this error. This can happen if the necessary relationships between different entities (like business objects) are not established.
  Data Model Changes: If there have been recent changes to the data model or object definitions, it may lead to inconsistencies that trigger this error.
  
  Solution:
  
  
  Check Object Model Configuration:
  
  Go to the relevant configuration settings in the SAP system where the object model is defined.
  Ensure that all necessary relationships between objects are correctly defined. This may involve checking the relationships in the object model configuration.
  
  
  
  Review Data Sources:
  
  Ensure that the data sources being used are correctly configured and that they include all necessary relationships.
  If you have recently modified any data sources, verify that the changes are reflected in the object model.
  
  
  
  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 or missing definitions.
  
  
  
  Check for Updates or Notes:
  
  Look for any SAP Notes or updates related to this error message. SAP frequently releases patches or notes that address specific issues, and applying these may resolve the problem.
  
  
  
  Consult Documentation:
  
  Review the official SAP documentation for Enterprise Search or the specific module you are working with. This can provide insights into the expected configurations and relationships.
  
  
  
  Contact SAP Support:
  
  If the issue cannot be resolved through the above steps, consider reaching out to SAP Support for assistance. They can provide more detailed guidance based on your specific system configuration.
  
  
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error.
  Community Forums: Check SAP Community forums or other user groups where similar issues may have been discussed.
  Documentation: Review the SAP Help Portal for documentation on configuring the object model and relationships in SAP Enterprise Search.
  
  By following these steps, you should be able to identify and resolve the cause of the ESH_OM_OBJ_MODEL_REP018 error in your SAP system.