How To Fix CNVC_SCWB_ZMESSAGE027 - Change the RFC user of system & to Dialog / Communication / System user.

SAP Error Message - Details

• Message type: E = Error

• Message class: CNVC_SCWB_ZMESSAGE -

• Message number: 027

• Message text: Change the RFC user of system & to Dialog / Communication / System user.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNVC_SCWB_ZMESSAGE027 - Change the RFC user of system & to Dialog / Communication / System user. ?

  The SAP error message CNVC_SCWB_ZMESSAGE027 typically indicates an issue related to the configuration of RFC (Remote Function Call) users in your SAP system. This error suggests that the RFC user associated with a particular system needs to be changed to a Dialog, Communication, or System user type.
  Cause:
  
  User Type Misconfiguration: The RFC user is not set up correctly. It may be configured as a type that does not allow for the required operations (e.g., it might be set as a service user instead of a dialog or communication user).
  Authorization Issues: The user may not have the necessary authorizations to perform the required actions in the system.
  System Configuration: The system may be configured in a way that requires specific user types for certain operations, and the current user does not meet those requirements.
  
  Solution:
  
  
  Change User Type:
  
  Go to transaction SU01 (User Maintenance).
  Enter the RFC user ID that is causing the issue.
  Check the user type in the user profile. If it is not set to Dialog, Communication, or System, change it accordingly.
  Save the changes.
  
  
  
  Check Authorizations:
  
  Ensure that the RFC user has the necessary authorizations to perform the required tasks. You can do this by reviewing the roles assigned to the user in transaction PFCG (Role Maintenance).
  
  
  
  Review RFC Destination:
  
  Check the RFC destination configuration in transaction SM59. Ensure that the destination is correctly configured to use the updated user credentials.
  
  
  
  Test the Connection:
  
  After making the changes, test the RFC connection to ensure that it is working correctly. You can do this in transaction SM59 by selecting the RFC destination and using the "Connection Test" option.
  
  
  
  Consult Documentation:
  
  If the issue persists, consult the SAP documentation or support for further troubleshooting steps specific to your system configuration.
  
  
  
  Related Information:
  
  
  User Types in SAP:
  
  Dialog User: A user who can log on to the SAP system and interact with it.
  Communication User: A user that is typically used for background processing and does not require a password.
  System User: A user that is used for system-to-system communication, often without a password.
  
  
  
  RFC Configuration: Understanding how RFC works in SAP and the importance of user types can help prevent similar issues in the future.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  
  If you continue to experience issues after following these steps, it may be beneficial to reach out to your SAP Basis team or SAP support for further assistance.