How To Fix ESH_OM_OBJ_MODEL_REP566 - Invalid relation used in NRF navigation path

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_OM_OBJ_MODEL_REP - Object Model Repository

• Message number: 566

• Message text: Invalid relation used in NRF navigation path

What causes this issue?

When assigning node fields to response fields, fields can only be used
from nodes which belong to:
Nodes that can be reached from the node that the response field belongs
to via relations of cardinality "Exactly one - Exactly one"
Text nodes that can be reached from the node that the response field
belongs to via relations of cardinality "Exactly one - Arbitrary",
"Exactly one - Maximum of one" or "Exactly one - At least one"
This is not the case for step &v1& of the navigation path leading from
the node to the node of the field referenced.

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?

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_REP566 - Invalid relation used in NRF navigation path ?

  The SAP error message ESH_OM_OBJ_MODEL_REP566 indicates that there is an invalid relation used in the navigation path of the SAP Enterprise Search (SAP ESH) Object Model. This error typically arises when the system encounters a navigation path that references a relationship that does not exist or is not properly defined in the object model.
  Causes:
  
  Incorrect Configuration: The navigation path may be incorrectly configured in the object model, leading to references to non-existent or invalid relations.
  Changes in Data Model: If there have been changes to the underlying data model (e.g., changes in tables, relationships, or fields), the navigation path may no longer be valid.
  Transport Issues: If the object model was transported from one system to another, there may be inconsistencies or missing components in the target system.
  Custom Development: Custom developments or modifications to the standard object model may introduce invalid relations.
  
  Solutions:
  
  
  Check Object Model Configuration:
  
  Review the configuration of the object model in the SAP ESH settings. Ensure that all relations used in the navigation path are correctly defined and exist in the model.
  Use transaction /IWFND/MAINT_SERVICE to check the service and its associated object model.
  
  
  
  Validate Navigation Paths:
  
  Go through the navigation paths defined in the object model and verify that all relations are valid and correctly mapped.
  If necessary, update or correct the navigation paths to ensure they reference valid relations.
  
  
  
  Review Changes:
  
  If there have been recent changes to the data model, review those changes to ensure they have been properly reflected in the object model.
  Check for any recent transports that may have affected the object model.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the relevant code or using transaction SE80 to analyze the object model and navigation paths in detail.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific version of SAP ESH you are using. There may be known issues or patches available.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including the context in which it occurs.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on troubleshooting.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Review the official SAP documentation for Enterprise Search and Object Model configuration for best practices and troubleshooting tips.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.