How To Fix ICF_SYSTEM_LOGIN075 - SSO logon not possible; no logon ticket due to error in configuration

SAP Error Message - Details

• Message type: E = Error

• Message class: ICF_SYSTEM_LOGIN - Messages for System Logon

• Message number: 075

• Message text: SSO logon not possible; no logon ticket due to error in configuration

What causes this issue?

Due to errors in the configuration no logon ticket could be issued.
There is an error in the SSO configuration, which is why the logon
ticket could not be issued. To ascertain the precise cause of the error,
see Note 320991.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

For more information see the SAP Library at the Internet address
help.sap.com/nw2004s -> <ZK>SAP NetWeaver -> SAP NetWeaver by Key
Capability -> Security -> User Authentification and Single Sign-On ->
Authentication on the SAP NetWeaver Application Server ABAP -> Using
Logon Tickets</>.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ICF_SYSTEM_LOGIN075 - SSO logon not possible; no logon ticket due to error in configuration ?

  The SAP error message ICF_SYSTEM_LOGIN075 indicates that Single Sign-On (SSO) logon is not possible because there is an issue with the configuration that prevents the generation of a logon ticket. This error typically arises in environments where SSO is implemented, and it can be caused by various factors. Below are the potential causes, solutions, and related information for this error:
  Causes:
  
  Incorrect Configuration of SSO: The SSO configuration in the SAP system may not be set up correctly. This includes settings in the SAP system and the Identity Provider (IdP).
  Missing or Incorrect Trust Relationship: The trust relationship between the SAP system and the IdP may not be established correctly.
  Expired or Invalid Certificates: If you are using certificates for SSO, they may have expired or may not be valid.
  Network Issues: There may be network connectivity issues between the SAP system and the IdP.
  User Mapping Issues: The user in the SAP system may not be correctly mapped to the user in the IdP.
  Authorization Issues: The user may not have the necessary authorizations to perform SSO.
  
  Solutions:
  
  
  Check SSO Configuration:
  
  Verify the SSO configuration in transaction SICF and ensure that the settings are correct.
  Check the parameters in the SAP Profile related to SSO.
  
  
  
  Validate Trust Relationship:
  
  Ensure that the trust relationship between the SAP system and the IdP is correctly established. This may involve checking the configuration in the IdP and ensuring that the SAP system is registered correctly.
  
  
  
  Check Certificates:
  
  If using certificates, check their validity and ensure they are correctly installed in the SAP system. You can use transaction STRUST to manage and check certificates.
  
  
  
  Network Connectivity:
  
  Test the network connectivity between the SAP system and the IdP. Ensure that there are no firewalls or network issues blocking the communication.
  
  
  
  User Mapping:
  
  Verify that the user in the SAP system is correctly mapped to the corresponding user in the IdP. This may involve checking user attributes and ensuring they match.
  
  
  
  Authorization Check:
  
  Ensure that the user has the necessary authorizations to perform SSO. This may involve checking roles and authorizations in the SAP system.
  
  
  
  Related Information:
  
  SAP Notes: Check for relevant SAP Notes that may address specific issues related to SSO and the error message ICF_SYSTEM_LOGIN075. You can search for notes in the SAP Support Portal.
  Documentation: Review the official SAP documentation on configuring SSO, which provides detailed steps and best practices.
  Logs: Check the system logs (transaction SM21) and the developer traces (transaction ST22) for any additional error messages that may provide more context on the issue.
  
  By following these steps, you should be able to identify and resolve the issue causing the ICF_SYSTEM_LOGIN075 error in your SAP environment.