How To Fix /IWFND/CM_CNP023 - Participant list is empty

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_CNP -

• Message number: 023

• Message text: Participant list is empty

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_CNP023 - Participant list is empty ?

  The SAP error message /IWFND/CM_CNP023 Participant list is empty typically occurs in the context of SAP Gateway and OData services. This error indicates that the system is expecting a list of participants (or entities) to be present, but it is empty. This can happen for various reasons, and understanding the cause is crucial for finding a solution.
  Causes:
  
  No Data Available: The most straightforward reason is that there are no entries in the database for the requested entity or service.
  Filter Criteria: If the OData service is being called with specific filter criteria, it may be that no records match those criteria.
  Authorization Issues: The user may not have the necessary authorizations to view the data, leading to an empty response.
  Service Configuration: The OData service might not be properly configured to fetch the required data.
  Backend Issues: There could be issues in the backend system (like missing data or misconfigured data sources) that prevent the retrieval of the participant list.
  
  Solutions:
  
  Check Data Availability: Verify that there are indeed records in the database for the entity you are trying to access. You can do this by directly querying the database or using transaction codes like SE16N.
  Review Filter Criteria: If you are using filters in your OData request, ensure that they are correct and that there are records that match those filters.
  Authorization Check: Ensure that the user has the necessary authorizations to access the data. You can check this in the user roles and authorizations.
  Service Configuration: Review the OData service configuration in the SAP Gateway. Ensure that the service is correctly set up to fetch the required data.
  Debugging: Use transaction code /IWFND/ERROR_LOG to check for any additional error messages or logs that might provide more context about the issue.
  Backend System Check: If the OData service relies on a backend system (like an SAP ERP or S/4HANA system), check that the backend is functioning correctly and that the necessary data is available.
  
  Related Information:
  
  SAP Gateway: This is the technology that allows you to connect devices, environments, and applications to SAP systems. Understanding how it works can help in troubleshooting issues.
  OData Services: Familiarize yourself with how OData services are structured and how they interact with the underlying data models.
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message. You can search for the error code or related keywords in the SAP Support Portal.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution. If the problem persists, consider reaching out to SAP support for further assistance.