How To Fix /IWNGW/CM_BEP_COS002 - Interface '&1' not implemented in class '&2' (provider '&3')

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWNGW/CM_BEP_COS -

• Message number: 002

• Message text: Interface '&1' not implemented in class '&2' (provider '&3')

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 /IWNGW/CM_BEP_COS002 - Interface '&1' not implemented in class '&2' (provider '&3') ?

  The SAP error message /IWNGW/CM_BEP_COS002 indicates that there is an issue with the implementation of a specific interface in the context of the SAP Gateway framework. This error typically arises when a service is trying to access a method or interface that has not been implemented in the specified class.
  Cause:
  
  Missing Implementation: The interface specified in the error message has not been implemented in the class mentioned. This could be due to a missing code or an incomplete implementation.
  Incorrect Configuration: The service might be incorrectly configured to use an interface that is not available in the provider class.
  Transport Issues: If the code was recently transported from one system to another, the implementation might not have been included in the transport.
  Version Mismatch: There could be a version mismatch between the service definition and the implementation in the backend.
  
  Solution:
  
  Check Implementation: Verify that the interface mentioned in the error message is implemented in the specified class. You can do this by navigating to the class in the ABAP Workbench (SE80 or SE24) and checking for the required methods.
  Implement Missing Methods: If the interface is not implemented, you will need to implement the required methods in the class. Ensure that the methods conform to the expected signatures.
  Review Service Configuration: Check the service configuration in the SAP Gateway (transaction /IWFND/MAINT_SERVICE) to ensure that the correct provider class is assigned to the service.
  Transport Check: If the issue arose after a transport, ensure that all necessary objects were included in the transport request and that they were successfully imported into the target system.
  Debugging: Use debugging tools to trace the execution and identify where the call to the unimplemented interface is being made. This can help in understanding the context of the error.
  Consult Documentation: Review the SAP documentation or notes related to the specific interface and class to ensure that you are following the correct implementation guidelines.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they found.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE80 (Object Navigator), SE24 (Class Builder), and /IWFND/MAINT_SERVICE (Service Maintenance) for troubleshooting.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.