How To Fix /IWFND/CM_MGW_RT146 - Extend the same model '&1' and version '&2' not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_MGW_RT -

• Message number: 146

• Message text: Extend the same model '&1' and version '&2' not allowed

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/CM_MGW_RT146 - Extend the same model '&1' and version '&2' not allowed ?

  The SAP error message /IWFND/CM_MGW_RT146 typically occurs in the context of SAP Gateway and OData services. This error indicates that there is an attempt to extend an existing model and version that is not allowed. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause
  
  Model and Version Conflict: The error arises when there is an attempt to extend an OData model that has already been defined and published. The system does not allow extending the same model and version because it can lead to inconsistencies and conflicts in the service definition.
  Incorrect Configuration: There may be a misconfiguration in the service definition or the way the extension is being attempted.
  Versioning Issues: If the model version is not properly managed, it can lead to attempts to extend a model that is already in use.
  
  Solution
  
  Check Existing Models: Verify if the model and version you are trying to extend already exist. You can do this by checking the service definitions in the SAP Gateway Service Builder (transaction code SEGW).
  Create a New Version: If you need to extend the model, consider creating a new version of the model instead of trying to extend the existing one. This can be done by modifying the version number in the service definition.
  Use the Correct Extension Mechanism: Ensure that you are using the correct method to extend the model. This may involve using the appropriate extension points or following the guidelines for extending OData services in SAP.
  Check for Active Services: Make sure that the service you are trying to extend is not currently active or in use. If it is, you may need to deactivate it before making changes.
  Consult Documentation: Refer to the SAP documentation for OData services and Gateway to understand the best practices for extending models and managing versions.
  
  Related Information
  
  SAP Gateway: Understand the architecture and components of SAP Gateway, as it plays a crucial role in OData service development.
  OData Versioning: Familiarize yourself with OData versioning concepts to manage your services effectively.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on extending OData models.
  Community Forums: Engage with the SAP Community or forums where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to resolve the error and successfully manage your OData service models in SAP.