How To Fix ESH_OM_OBJ_MODEL_REP390 - Start-node of navigation path differs from from-node of first step

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_OM_OBJ_MODEL_REP - Object Model Repository

• Message number: 390

• Message text: Start-node of navigation path differs from from-node of first step

What causes this issue?

A navigation path links the two nodes:
Start-node: Node where the path begins
End-node: Node where the path ends
It also consists of a sequence of steps.
A navigation path step links the two nodes.
From-node: Node where the step starts
To-node: Node where the step ends
The start-node of the path must be the same node as the from-node of the
first step.
The end-node of the path must be the same node as the to-node of the
last step.
This is not the case.

System Response

The navigation path is inconsistent.

How to fix this error?

Correct the navigation path accordingly.

Procedure for System Administrators

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_REP390 - Start-node of navigation path differs from from-node of first step ?

  The SAP error message ESH_OM_OBJ_MODEL_REP390 indicates that there is a mismatch in the navigation path within the Enterprise Search (ESH) framework. Specifically, it suggests that the start node of the navigation path does not match the from-node of the first step in the navigation path. This can occur in scenarios where the configuration of the search model or the navigation paths has inconsistencies.
  Cause:
  
  Configuration Issues: The navigation path may be incorrectly configured in the ESH model. This can happen if the start node is not properly defined or if there are changes in the underlying data model that have not been reflected in the navigation path.
  Data Model Changes: If there have been changes to the data model (e.g., changes in the underlying database tables or structures), the navigation paths may not align with the new structure.
  Inconsistent Object Types: The object types defined in the navigation path may not correspond correctly to the expected types in the model.
  
  Solution:
  
  
  Check Navigation Path Configuration:
  
  Go to the ESH configuration in the SAP system.
  Review the navigation paths defined for the specific search model.
  Ensure that the start node is correctly defined and matches the from-node of the first step.
  
  
  
  Update Data Model:
  
  If there have been changes to the underlying data model, ensure that the ESH model is updated accordingly.
  You may need to regenerate the search model or refresh the data model to reflect the changes.
  
  
  
  Validate Object Types:
  
  Ensure that the object types used in the navigation path are consistent with the definitions in the ESH model.
  Check for any discrepancies in the object types and correct them as necessary.
  
  
  
  Rebuild the Search Model:
  
  If the issue persists, consider rebuilding the search model to ensure that all configurations are correctly applied.
  This can often resolve issues related to outdated or incorrect configurations.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for Enterprise Search and the specific error message for additional guidance and troubleshooting steps.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide patches and updates.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as EHS_SEARCH or EHS_ADMIN for managing ESH configurations.
  
  By following these steps, you should be able to identify and resolve the cause of the ESH_OM_OBJ_MODEL_REP390 error in your SAP system.