How To Fix ESH_OM_OBJ_MODEL_REP771 - Switch cannot be assigned to root node of model &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_OM_OBJ_MODEL_REP - Object Model Repository

• Message number: 771

• Message text: Switch cannot be assigned to root node of model &1

What causes this issue?

A switch cannot be assigned to node &v1& of template &v2& because it is
the root node of the template.

System Response

Switches cannot be assigned to root nodes.

How to fix this error?

Assign the switch to template &v2&.

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_REP771 - Switch cannot be assigned to root node of model &1 ?

  The SAP error message ESH_OM_OBJ_MODEL_REP771 indicates that there is an issue with assigning a switch to the root node of a model in the SAP Enterprise Search (SAP ESH) framework. This error typically arises when there is an attempt to configure or modify the object model in a way that violates the structural rules of the model.
  Cause:
  
  Model Structure Violation: The error occurs when a switch (which is a type of node in the object model) is being assigned to the root node of the model, which is not allowed. The root node is typically expected to have specific types of child nodes, and switches may not be one of them.
  Configuration Error: There may be a misconfiguration in the object model setup, where the hierarchy or relationships between nodes are not correctly defined.
  Incompatibility: The switch may not be compatible with the root node due to the way the object model is designed.
  
  Solution:
  
  Review Object Model Configuration: Check the configuration of the object model to ensure that the hierarchy is correctly defined. Make sure that switches are assigned to appropriate nodes that are allowed to have them as children.
  Modify Node Assignments: If a switch is incorrectly assigned to the root node, reassign it to a valid child node that can accept switches.
  Consult Documentation: Refer to the SAP documentation for the specific version you are using to understand the rules regarding node assignments in the object model.
  Check for Updates: Ensure that your SAP system is up to date, as there may be patches or updates that address this issue.
  Seek Help from SAP Support: If the issue persists, consider reaching out to SAP support for assistance, providing them with the error message and context for further troubleshooting.
  
  Related Information:
  
  SAP ESH Documentation: Review the official SAP documentation for Enterprise Search to understand the object model and its configuration.
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help in managing the object model, such as EHS_MODEL or similar.
  Community Forums: Check SAP community forums or user groups for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to resolve the error and correctly configure your object model in SAP ESH.