How To Fix /IWFND/CM_CNP002 - Participant list is empty for consumer ID '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_CNP -

• Message number: 002

• Message text: Participant list is empty for consumer ID '&1'

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 /IWFND/CM_CNP002 - Participant list is empty for consumer ID '&1' ?

  The SAP error message /IWFND/CM_CNP002 Participant list is empty for consumer ID '&1' typically occurs in the context of SAP Gateway and OData services. This error indicates that the system is unable to find any registered participants (service consumers) for the specified consumer ID. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  No Registered Consumers: The consumer ID specified in the error message does not have any associated participants registered in the system.
  Configuration Issues: There may be issues with the configuration of the OData service or the consumer ID itself.
  Service Activation: The OData service might not be activated or properly configured in the SAP Gateway.
  Authorization Issues: The user or system trying to access the service may not have the necessary authorizations to view the participants.
  
  Solutions:
  
  Check Consumer ID: Verify that the consumer ID specified in the error message is correct and exists in the system.
  Register Participants: Ensure that the necessary participants (applications or services) are registered for the specified consumer ID. This can be done through the SAP Gateway Service Builder (transaction code /IWFND/MAINT_SERVICE).
  Activate OData Service: Make sure that the OData service is activated. You can check this in the SAP Gateway Service Maintenance transaction.
  Review Configuration: Check the configuration settings for the OData service and ensure that all required settings are correctly configured.
  Check Authorizations: Ensure that the user or system has the necessary authorizations to access the OData service and its participants.
  Debugging: If the issue persists, consider debugging the OData service to identify where the participant list is being populated and why it might be empty.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the specific error message for any known issues or patches.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Documentation: Review the official SAP documentation for OData services and SAP Gateway for more detailed information on configuration and troubleshooting.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.