How To Fix /IWFND/CM_V4_COS020 - Not implemented

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_V4_COS -

• Message number: 020

• Message text: Not implemented

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 /IWFND/CM_V4_COS020 - Not implemented ?

  The SAP error message /IWFND/CM_V4_COS020 Not implemented typically occurs in the context of SAP Gateway and OData services. This error indicates that a certain operation or functionality that is expected to be implemented in the OData service is not available. Here are some details regarding the cause, potential solutions, and related information:
  Cause:
  
  Missing Implementation: The OData service may not have the required method implemented for the operation you are trying to perform (e.g., GET, POST, PUT, DELETE).
  Service Configuration: The service might not be properly configured or activated in the SAP Gateway.
  Versioning Issues: There may be a mismatch between the OData service version and the client request.
  Authorization Issues: The user may not have the necessary authorizations to access the service or perform the requested operation.
  
  Solutions:
  
  
  Check Service Implementation:
  
  Go to the SAP Gateway Service Builder (transaction code SEGW) and check if the required operation is implemented in the service.
  If not, you may need to implement the missing functionality in the service.
  
  
  
  Activate the Service:
  
  Ensure that the OData service is activated in the SAP Gateway. You can do this using transaction code /IWFND/MAINT_SERVICE.
  Check if the service is listed and activated. If not, activate it.
  
  
  
  Review Service Metadata:
  
  Access the service metadata (usually available at the URL http://<host>:<port>/sap/opu/odata/sap/<service_name>/$metadata) to verify if the expected operations are defined.
  
  
  
  Check for Versioning Issues:
  
  Ensure that the client is calling the correct version of the OData service. If there are multiple versions, make sure the correct one is being used.
  
  
  
  Authorization Check:
  
  Verify that the user has the necessary authorizations to access the OData service. Check the roles and authorizations assigned to the user.
  
  
  
  Debugging:
  
  If you have access to the backend, you can debug the service implementation to see where it might be failing or not implemented.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the specific OData service or the error message for any known issues or patches.
  SAP Community: The SAP Community forums can be a valuable resource for finding similar issues and solutions shared by other users.
  Documentation: Review the official SAP documentation for OData services and SAP Gateway for best practices and troubleshooting steps.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution. If the issue persists, consider reaching out to SAP support for further assistance.