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

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

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

  The SAP error message /IWBEP/CM_MGW_RT146 typically occurs in the context of SAP Gateway and OData services. This error indicates that there is an attempt to extend a model or version that is not allowed, which can happen for various reasons. Below are the potential causes, solutions, and related information for this error:
  Causes:
  
  Model Version Conflict: The error may arise if there is an attempt to extend a model that is already extended or if there is a version conflict with the existing model.
  Incorrect Configuration: The model or version may not be configured correctly in the SAP Gateway.
  Incompatible Extensions: The extension being attempted may not be compatible with the existing model or version.
  Authorization Issues: There may be authorization issues preventing the extension of the model.
  
  Solutions:
  
  Check Existing Models: Verify if the model and version you are trying to extend already exist. If they do, ensure that you are not trying to extend them again.
  Review Model Configuration: Go to the SAP Gateway Service Builder (transaction code SEGW) and check the configuration of the model and version. Ensure that they are set up correctly.
  Use Different Model/Version: If the model or version is already in use, consider creating a new model or version for your extension.
  Check for Compatibility: Ensure that the extension you are trying to implement is compatible with the existing model. Review the documentation for any constraints.
  Authorization Check: Ensure that you have the necessary authorizations to perform the extension. Check your user roles and permissions.
  Consult SAP Notes: Look for any relevant SAP Notes that might address this specific error. SAP frequently updates its knowledge base with solutions to common issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SEGW (Service Builder) and IWFND/MAINT_SERVICE (Manage Services) for managing OData services.
  SAP Gateway Documentation: Review the official SAP Gateway documentation for best practices on extending models and handling errors.
  Community Forums: Check SAP Community forums or other developer forums for similar issues and solutions shared by other users.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance, providing them with detailed information about the error and the steps you have already taken.