How To Fix SRT_WSP872 - They support different sets of authentication methods

SAP Error Message - Details

• Message type: E = Error

• Message class: SRT_WSP - Messages for SRT WSP

• Message number: 872

• Message text: They support different sets of authentication methods

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SRT_WSP872 - They support different sets of authentication methods ?

  The SAP error message SRT_WSP872 indicates that there is a mismatch in the authentication methods supported by the client and the server when trying to establish a web service connection. This typically occurs in scenarios involving SAP Process Integration (PI) or SAP Process Orchestration (PO) when consuming or exposing web services.
  Cause:
  The error arises when:
  
  The client (consumer) and the server (provider) are configured to use different authentication methods. For example, one might be set to use Basic Authentication while the other is set to use WS-Security.
  The web service endpoint is not correctly configured to support the authentication method being requested.
  There may be a misconfiguration in the security settings of the web service or the client application.
  
  Solution:
  To resolve the SRT_WSP872 error, you can follow these steps:
  
  
  Check Authentication Configuration:
  
  Verify the authentication methods configured on both the client and server sides. Ensure they match.
  If using Basic Authentication, ensure that both sides are set to use it. If using WS-Security, ensure that both sides are configured to support it.
  
  
  
  Update Web Service Configuration:
  
  In the SAP system, navigate to the relevant web service configuration (e.g., SOAMANAGER for service administration).
  Check the security settings and ensure that the correct authentication method is selected.
  
  
  
  Review Client Configuration:
  
  If you are using a third-party client or a custom application, ensure that it is configured to use the same authentication method as the SAP web service.
  Update the client code or configuration to match the server's expected authentication method.
  
  
  
  Test Connectivity:
  
  After making changes, test the connectivity again to see if the error persists.
  Use tools like SOAP UI or Postman to simulate requests and check the authentication headers being sent.
  
  
  
  Check Logs:
  
  Review the SAP application logs (transaction SLG1) for any additional error messages or details that might provide more context on the issue.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to web service authentication for any specific configurations or known issues.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Web Service Security: Familiarize yourself with the different authentication methods supported by SAP web services, including Basic Authentication, WS-Security, and OAuth.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By ensuring that both the client and server are aligned in their authentication methods, you should be able to resolve the SRT_WSP872 error.