How To Fix SAML2031 - The assertion was not received at end point '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: SAML2 - SAML2 Nachrichten

• Message number: 031

• Message text: The assertion was not received at end point '&1'

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SAML2031 - The assertion was not received at end point '&1' ?

  The SAP error message SAML2031 indicates that the Security Assertion Markup Language (SAML) assertion was not received at the specified endpoint. This error typically occurs in scenarios involving Single Sign-On (SSO) configurations where SAML assertions are used for authentication and authorization.
  Cause:
  
  Network Issues: There may be network connectivity problems preventing the assertion from reaching the endpoint.
  Configuration Errors: The SAML configuration might be incorrect, such as mismatched URLs, incorrect endpoint settings, or issues with the Identity Provider (IdP) or Service Provider (SP) configurations.
  Timeouts: The assertion may have expired before it reached the endpoint, leading to a failure in processing.
  Incorrect Assertion Consumer Service (ACS) URL: The ACS URL configured in the IdP may not match the one expected by the SP.
  Firewall or Security Settings: Firewalls or security settings may be blocking the assertion from being transmitted.
  
  Solution:
  
  Check Network Connectivity: Ensure that there are no network issues between the IdP and SP. You can use tools like ping or traceroute to diagnose connectivity.
  Review SAML Configuration:
  
  Verify that the SAML configuration on both the IdP and SP sides is correct.
  Ensure that the ACS URL is correctly configured and matches what is expected by the SP.
  Check the entity IDs and certificates used for signing and encryption.
  
  
  Check Assertion Validity: Ensure that the assertion is valid and has not expired. You may need to adjust the validity period settings in the IdP.
  Review Logs: Check the logs on both the IdP and SP for any additional error messages or warnings that could provide more context about the failure.
  Test with SAML Tracer: Use a SAML tracer tool (like SAML-tracer for Firefox or Chrome) to capture the SAML requests and responses. This can help identify where the assertion is failing.
  Firewall and Security Settings: Ensure that any firewalls or security settings are configured to allow SAML assertions to pass through.
  
  Related Information:
  
  SAML Documentation: Review the SAML specifications and documentation for both the IdP and SP to ensure compliance with standards.
  SAP Notes: Check SAP Notes for any known issues or patches related to SAML authentication.
  Community Forums: Engage with SAP community forums or support channels for additional insights and troubleshooting tips from other users who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the SAML2031 error effectively.