How To Fix /IWFND/CM_CNP031 - User subscription is not required for object '&1' and consumer type '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_CNP -

• Message number: 031

• Message text: User subscription is not required for object '&1' and consumer type '&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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/CM_CNP031 - User subscription is not required for object '&1' and consumer type '&2' ?

  The SAP error message /IWFND/CM_CNP031 indicates that a user subscription is not required for a specific object and consumer type. This error typically arises in the context of SAP Gateway and OData services, particularly when dealing with the subscription model for notifications or event-driven architectures.
  Cause:
  
  Incorrect Configuration: The object (e.g., an OData service) may not be configured to require user subscriptions. This can happen if the service is not set up to support notifications or if the subscription feature is not enabled for that specific object.
  Consumer Type Mismatch: The consumer type specified in the request may not match the expected type for the object. For example, if the object is intended for a different type of consumer (like a mobile app vs. a web application), this error may occur.
  Service Implementation: The OData service implementation may not have the necessary logic to handle subscriptions for the specified object.
  
  Solution:
  
  
  Check Service Configuration:
  
  Go to the SAP Gateway Service Builder (transaction code SEGW) and check the configuration of the OData service. Ensure that the service is set up to support subscriptions if that is the intended functionality.
  Verify that the service is activated and that the necessary entities are correctly defined.
  
  
  
  Review Consumer Type:
  
  Ensure that the consumer type you are using in your request matches the expected consumer type for the object. If you are unsure, refer to the service documentation or the implementation details.
  
  
  
  Modify Implementation:
  
  If the service is supposed to support subscriptions, you may need to implement the necessary logic in the service's backend code (e.g., ABAP code) to handle subscriptions correctly.
  
  
  
  Check Authorization:
  
  Ensure that the user has the necessary authorizations to access the service and perform subscription actions.
  
  
  
  Consult Documentation:
  
  Review the SAP documentation related to the specific OData service and the subscription model to ensure that you are following the correct procedures.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance on configuring subscriptions for OData services.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Debugging: If you have access to the backend, consider debugging the service to trace the exact point where the error occurs, which can provide more context for troubleshooting.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.