How To Fix SAML2130 - SubjectConfirmation element validation failed

SAP Error Message - Details

• Message type: E = Error

• Message class: SAML2 - SAML2 Nachrichten

• Message number: 130

• Message text: SubjectConfirmation element validation failed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SAML2130 - SubjectConfirmation element validation failed ?

  The SAP error message SAML2130: SubjectConfirmation element validation failed typically occurs in the context of Single Sign-On (SSO) configurations using SAML (Security Assertion Markup Language). This error indicates that there is an issue with the SubjectConfirmation element in the SAML assertion, which is crucial for validating the identity of the user.
  Causes:
  
  
  Incorrect SubjectConfirmation Method: The method specified in the SubjectConfirmation element may not match the expected method by the service provider (SP). Common methods include urn:oasis:names:tc:SAML:1.0:subject-confirmation:bearer or urn:oasis:names:tc:SAML:2.0:cm:bearer.
  
  
  Missing or Invalid SubjectConfirmationData: The SubjectConfirmationData element may be missing or contain invalid information, such as an incorrect NotOnOrAfter attribute, which specifies the expiration time of the assertion.
  
  
  Audience Restriction: The audience specified in the assertion may not match the expected audience for the service provider.
  
  
  Clock Skew: If the system clocks between the Identity Provider (IdP) and the Service Provider (SP) are not synchronized, it can lead to validation failures.
  
  
  Signature Issues: If the SAML assertion is not properly signed or the signature cannot be validated, it may lead to this error.
  
  
  Solutions:
  
  
  Check SubjectConfirmation Method: Ensure that the SubjectConfirmation method used in the SAML assertion is correct and matches what the SP expects.
  
  
  Validate SubjectConfirmationData: Ensure that the SubjectConfirmationData element is present and correctly configured, including the NotOnOrAfter attribute.
  
  
  Review Audience Restrictions: Verify that the audience specified in the SAML assertion matches the expected audience configured in the SP.
  
  
  Synchronize Clocks: Ensure that the system clocks of the IdP and SP are synchronized to avoid issues with time-based validations.
  
  
  Check Signature Validity: Ensure that the SAML assertion is properly signed and that the SP can validate the signature using the IdP's public key.
  
  
  Review SAML Configuration: Check the SAML configuration settings on both the IdP and SP sides to ensure they are correctly set up.
  
  
  Related Information:
  
  SAML Assertions: Understand the structure of SAML assertions, including the Subject, Conditions, and Signature elements.
  SAML Profiles: Familiarize yourself with the different SAML profiles and how they affect the configuration of SSO.
  Logging and Tracing: Enable detailed logging on both the IdP and SP to capture more information about the SAML transactions, which can help in diagnosing the issue.
  Documentation: Refer to SAP documentation and SAML specifications for detailed information on configuring SSO and troubleshooting SAML-related issues.
  
  By addressing the above causes and implementing the suggested solutions, you should be able to resolve the SAML2130 error and ensure successful SSO functionality.