How To Fix /IWFND/CM_BEC028 - RFC Error: Wrong user type

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWFND/CM_BEC -

• Message number: 028

• Message text: RFC Error: Wrong user type

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWFND/CM_BEC028 - RFC Error: Wrong user type ?

  The SAP error message /IWFND/CM_BEC028 RFC Error: Wrong user type typically occurs in the context of SAP Gateway and indicates that there is an issue with the user type being used for a Remote Function Call (RFC). This error can arise due to various reasons, including incorrect user roles, authorization issues, or configuration problems.
  Causes:
  
  User Type Mismatch: The user being used for the RFC call may not have the correct type (e.g., dialog user vs. service user).
  Authorization Issues: The user may not have the necessary authorizations to perform the requested operation.
  Configuration Errors: There may be misconfigurations in the SAP Gateway or the backend system that are causing the user type to be incorrectly interpreted.
  Service User Not Defined: If a service user is expected but a dialog user is being used, this can lead to the error.
  
  Solutions:
  
  
  Check User Type:
  
  Ensure that the user being used for the RFC call is of the correct type. For service calls, a service user (with type "Service") should be used instead of a dialog user.
  You can check the user type in transaction SU01 by entering the username and reviewing the user type field.
  
  
  
  Review Authorizations:
  
  Verify that the user has the necessary authorizations to execute the requested function. You can use transaction SU53 to analyze authorization failures after the error occurs.
  Ensure that the user has the appropriate roles assigned that include the necessary authorizations for the operations being performed.
  
  
  
  Check RFC Destination:
  
  In transaction SM59, check the configuration of the RFC destination being used. Ensure that it is correctly set up and that the user credentials are valid.
  Test the RFC connection to ensure it is working as expected.
  
  
  
  Review Gateway Configuration:
  
  Check the configuration of the SAP Gateway service. Ensure that the service is properly registered and that the user type is correctly defined in the service configuration.
  Use transaction /IWFND/MAINT_SERVICE to manage and check the services.
  
  
  
  Consult Logs:
  
  Review the system logs (transaction SM21) and the Gateway logs (transaction /IWFND/ERROR_LOG) for any additional error messages or details that can provide more context about the issue.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance, especially if this is a production environment.
  
  
  
  Related Information:
  
  User Types in SAP: Understanding the different user types (Dialog, System, Service, etc.) is crucial for configuring users correctly in SAP.
  Authorization Concepts: Familiarity with SAP authorization concepts and how roles and profiles work can help in troubleshooting authorization-related issues.
  SAP Gateway: Knowledge of how SAP Gateway works, including service registration and user management, can be beneficial in resolving issues related to OData services.
  
  By following these steps, you should be able to identify and resolve the cause of the /IWFND/CM_BEC028 RFC Error: Wrong user type error in your SAP system.