How To Fix SAML2143 - Automatic account creation - response is expected on register endpoint

SAP Error Message - Details

• Message type: E = Error

• Message class: SAML2 - SAML2 Nachrichten

• Message number: 143

• Message text: Automatic account creation - response is expected on register endpoint

Self-Explanatory Message

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SAML2143 - Automatic account creation - response is expected on register endpoint ?

  The SAP error message SAML2143 indicates that there is an issue with the automatic account creation process in the context of SAML (Security Assertion Markup Language) authentication. Specifically, it suggests that a response is expected at the register endpoint, but it is not being received.
  Cause:
  The error can occur due to several reasons, including:
  
  
  Misconfiguration of SAML Settings: The SAML configuration in the SAP system may not be set up correctly, leading to issues in the communication between the Identity Provider (IdP) and the Service Provider (SP).
  
  
  Endpoint Issues: The register endpoint that is supposed to handle the account creation request may be incorrectly configured, down, or not reachable.
  
  
  Network Issues: There may be network connectivity problems preventing the SAP system from reaching the IdP or the register endpoint.
  
  
  Identity Provider (IdP) Issues: The IdP may not be configured to handle the request properly or may be experiencing issues.
  
  
  User Attributes: Required user attributes for account creation may not be provided in the SAML assertion.
  
  
  Solution:
  To resolve the SAML2143 error, you can take the following steps:
  
  
  Check SAML Configuration:
  
  Verify the SAML settings in the SAP system, including the IdP metadata, assertion consumer service (ACS) URL, and the register endpoint configuration.
  Ensure that the correct endpoints are specified and that they match the configuration on the IdP side.
  
  
  
  Test the Register Endpoint:
  
  Manually test the register endpoint to ensure it is reachable and functioning correctly. You can use tools like Postman or curl to send requests to the endpoint.
  
  
  
  Review IdP Configuration:
  
  Check the configuration of the IdP to ensure it is set up to handle account creation requests and that it is properly configured to send the necessary attributes in the SAML assertion.
  
  
  
  Check Network Connectivity:
  
  Ensure that there are no firewall or network issues preventing communication between the SAP system and the IdP or the register endpoint.
  
  
  
  Review Logs:
  
  Check the logs in both the SAP system and the IdP for any additional error messages or warnings that could provide more context about the issue.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation and the documentation of the IdP for any specific requirements or configurations needed for automatic account creation.
  
  
  
  Contact Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support or the support team for your IdP for further assistance.
  
  
  
  Related Information:
  
  SAML: A standard for exchanging authentication and authorization data between parties, particularly between an IdP and an SP.
  Automatic Account Creation: A feature that allows new user accounts to be created automatically based on SAML assertions received from the IdP.
  SAP Documentation: Always refer to the latest SAP documentation for specific configurations and troubleshooting steps related to SAML and user management.
  
  By following these steps, you should be able to identify and resolve the cause of the SAML2143 error in your SAP environment.