How To Fix SAML2056 - The logon policies do not support the authentication contexts

SAP Error Message - Details

• Message type: E = Error

• Message class: SAML2 - SAML2 Nachrichten

• Message number: 056

• Message text: The logon policies do not support the authentication contexts

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SAML2056 - The logon policies do not support the authentication contexts ?

  The SAP error message SAML2056 indicates that there is a mismatch between the authentication contexts requested by the service provider (SP) and the logon policies configured in the SAP system. This typically occurs in scenarios involving Single Sign-On (SSO) using SAML (Security Assertion Markup Language).
  Cause:
  
  Authentication Context Mismatch: The authentication context requested by the SAML assertion does not match any of the authentication contexts defined in the SAP system's logon policies.
  Logon Policy Configuration: The logon policies in the SAP system may not be configured to accept the authentication methods being requested by the identity provider (IdP).
  SAML Configuration Issues: There may be issues with the SAML configuration, such as incorrect settings in the IdP or SP configurations.
  
  Solution:
  
  
  Check Logon Policies:
  
  Go to the SAP system and check the logon policies configured in transaction SAML2.
  Ensure that the authentication contexts defined in the logon policies match those being sent by the IdP. You may need to add or modify the authentication contexts in the logon policy.
  
  
  
  Update SAML Configuration:
  
  Review the SAML configuration on both the IdP and SP sides. Ensure that the authentication contexts are correctly defined and that they align with what the SAP system expects.
  If necessary, update the IdP configuration to send the correct authentication context.
  
  
  
  Testing:
  
  After making changes, test the SSO login again to see if the issue is resolved.
  Use tools like SAML Tracer (a browser extension) to inspect the SAML assertions being sent and verify the authentication context.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation for detailed guidance on configuring SAML and logon policies. This can provide insights into the expected authentication contexts and how to configure them properly.
  
  
  
  Logs and Traces:
  
  Check the SAP system logs (transaction SM21) and SAML logs (transaction SAML2) for any additional error messages or warnings that could provide more context about the issue.
  
  
  
  Related Information:
  
  SAML2 Configuration: Familiarize yourself with the SAML2 configuration in SAP, including how to set up identity providers and service providers.
  Authentication Contexts: Understand the different types of authentication contexts (e.g., password-based, certificate-based) and how they are defined in both the IdP and SAP.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues or provide updates related to SAML and authentication contexts.
  
  By following these steps, you should be able to resolve the SAML2056 error and ensure that your SSO configuration works as intended.