How To Fix ICF_SYSTEM_LOGIN400 - Select a logon class

SAP Error Message - Details

• Message type: E = Error

• Message class: ICF_SYSTEM_LOGIN - Messages for System Logon

• Message number: 400

• Message text: Select a logon class

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ICF_SYSTEM_LOGIN400 - Select a logon class ?

  The SAP error message "ICF_SYSTEM_LOGIN400: Select a logon class" typically occurs when there is an issue with the configuration of the Internet Communication Framework (ICF) in the SAP system, particularly related to the logon classes that are defined for the system.
  Cause:
  
  Logon Class Not Defined: The error usually indicates that the logon class that is required for the user session is not defined or is not available in the system.
  Configuration Issues: There may be issues with the configuration of the ICF services or the logon classes in the SAP system.
  Authorization Issues: The user may not have the necessary authorizations to access the logon class or the ICF service.
  System Settings: The system settings for the ICF may not be properly configured, leading to this error.
  
  Solution:
  
  
  Check Logon Classes:
  
  Go to transaction code SUC01 (or SICF for ICF services) and check the logon classes defined in the system.
  Ensure that the logon classes are properly configured and available.
  
  
  
  Define Logon Class:
  
  If no logon class is defined, you can create a new logon class in the system.
  Use transaction code SUC01 to create or modify logon classes.
  
  
  
  Check ICF Services:
  
  Use transaction code SICF to check the status of the ICF services.
  Ensure that the relevant ICF services are activated and properly configured.
  
  
  
  User Authorizations:
  
  Verify that the user has the necessary authorizations to access the logon class and the ICF services.
  Check the user roles and profiles to ensure they include the necessary permissions.
  
  
  
  System Configuration:
  
  Review the system configuration settings related to the ICF and logon classes.
  Ensure that the system parameters are set correctly.
  
  
  
  Restart ICF Services:
  
  Sometimes, restarting the ICF services can resolve temporary issues. You can do this through transaction SICF.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Refer to the official SAP documentation for more details on ICF and logon class configuration.
  Community Forums: Consider checking SAP Community forums or other online resources for similar issues and solutions shared by other users.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or SAP support for further assistance.