How To Fix /IWBEP/CM_MGW_RT021 - Method '&1' not implemented in data provider class

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 021

• Message text: Method '&1' not implemented in data provider class

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_RT021 - Method '&1' not implemented in data provider class ?

  The SAP error message /IWBEP/CM_MGW_RT021 Method '&1' not implemented in data provider class typically occurs in the context of SAP Gateway services when a method that is expected to be implemented in the data provider class is not found. This can happen when the OData service is trying to call a method (like GET, POST, PUT, DELETE, etc.) that has not been defined in the corresponding ABAP class.
  Cause:
  
  Missing Implementation: The method specified in the error message (e.g., GET, POST, etc.) is not implemented in the data provider class.
  Incorrect Service Registration: The OData service might not be correctly registered or activated in the SAP Gateway.
  Changes in Service: If there have been recent changes to the OData service or the underlying data provider class, it may lead to inconsistencies.
  Transport Issues: If the data provider class was transported from one system to another, the implementation might not have been included.
  
  Solution:
  
  
  Implement the Method: 
  
  Go to the data provider class (usually a class that implements the interface IF_MGW_APPL_SRV).
  Implement the missing method as per the requirements of your OData service. Ensure that the method signature matches what is expected by the OData framework.
  
  
  
  Check Service Registration:
  
  Use transaction code /IWFND/MAINT_SERVICE to check if the service is correctly registered and activated.
  If not, register and activate the service.
  
  
  
  Re-generate the Service:
  
  If you have made changes to the data provider class, you may need to regenerate the service. You can do this using transaction /IWFND/MAINT_SERVICE and selecting the service to regenerate.
  
  
  
  Check for Transport Issues:
  
  Ensure that all necessary objects (including the data provider class) have been transported correctly to the target system.
  
  
  
  Debugging:
  
  If the issue persists, you can debug the OData service to see where the call is failing and gather more information about the context of the error.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  /IWFND/MAINT_SERVICE: For managing OData services.
  /IWBEP/REG_SERVICE: For registering OData services.
  
  
  
  Documentation: Refer to SAP Help documentation for OData services and the specific methods that need to be implemented in the data provider class.
  
  
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance on implementing OData services.
  
  
  By following these steps, you should be able to resolve the error and ensure that the required methods are implemented in your data provider class.