How To Fix /IWBEP/CM_CP035 - Proxy model class '&1' does not implement required interface '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_CP -

• Message number: 035

• Message text: Proxy model class '&1' does not implement required interface '&2'

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_CP035 - Proxy model class '&1' does not implement required interface '&2' ?

  The SAP error message /IWBEP/CM_CP035 Proxy model class '&1' does not implement required interface '&2' typically occurs in the context of SAP Gateway and OData services. This error indicates that a proxy model class, which is expected to implement a specific interface, does not do so. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause
  
  
  Missing Interface Implementation: The proxy model class (represented by &1) is expected to implement a specific interface (represented by &2), but it does not. This can happen if the class was not generated correctly or if there were changes in the underlying data model that were not reflected in the proxy class.
  
  
  Inconsistent Metadata: If the metadata of the OData service has changed (e.g., fields added or removed) and the corresponding proxy class has not been updated, this error can occur.
  
  
  Development Environment Issues: Sometimes, issues in the development environment, such as missing dependencies or incorrect configurations, can lead to this error.
  
  
  Solution
  
  
  Regenerate the Proxy Class:
  
  Go to the transaction code /IWFND/MAINT_SERVICE.
  Find the service that is causing the issue and select it.
  Click on the "Regenerate" button to regenerate the proxy classes. This should ensure that the proxy class implements the required interfaces.
  
  
  
  Check the Interface Implementation:
  
  Use transaction SE80 or SE11 to check the implementation of the proxy class.
  Ensure that the required interface is correctly implemented in the class.
  
  
  
  Update the OData Service:
  
  If there have been changes to the underlying data model, ensure that the OData service is updated accordingly.
  You may need to adjust the service definition and regenerate the service.
  
  
  
  Check for Transport Issues:
  
  If the issue occurs after a transport, ensure that all necessary objects were transported correctly and that there are no missing dependencies.
  
  
  
  Debugging:
  
  If the above steps do not resolve the issue, consider debugging the OData service to identify where the implementation is failing.
  
  
  
  Related Information
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  Documentation: Review the SAP Gateway and OData documentation for best practices on service implementation and proxy generation.
  Community Forums: Engage with the SAP Community or forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the error and ensure that your proxy model class correctly implements the required interface.