How To Fix SRT_WSP2388 - Unsupported authentication method found: '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: SRT_WSP2 - Messages for SRT WSP

• Message number: 388

• Message text: Unsupported authentication method found: '&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 SRT_WSP2388 - Unsupported authentication method found: '&1' ?

  The SAP error message SRT_WSP2388 indicates that an unsupported authentication method has been detected in a web service call. This error typically arises when the web service client attempts to use an authentication method that the SAP system does not support or is not configured to handle.
  Cause:
  
  Unsupported Authentication Method: The client may be trying to use an authentication method (like Basic Authentication, WS-Security, etc.) that is not enabled or supported by the SAP system.
  Configuration Issues: The web service might be configured incorrectly, leading to the use of an unsupported authentication method.
  Version Mismatch: There may be a mismatch between the client and server versions, leading to unsupported features being requested.
  
  Solution:
  
  
  Check Authentication Method: Verify the authentication method being used by the client. Ensure that it is supported by the SAP system. Common methods include:
  
  Basic Authentication
  WS-Security
  OAuth
  SAML
  
  
  
  Configure SAP for Supported Methods: If the authentication method is indeed required, you may need to configure the SAP system to support it. This can involve:
  
  Enabling specific authentication methods in the SAP NetWeaver Administrator (NWA).
  Configuring the web service security settings in the SOAMANAGER transaction.
  
  
  
  Update Client Configuration: If the client is using an unsupported method, update its configuration to use a supported authentication method.
  
  
  Check for Updates: Ensure that both the SAP system and the client libraries are up to date. Sometimes, newer versions may support additional authentication methods.
  
  
  Review Documentation: Consult the SAP documentation for the specific version you are using to understand the supported authentication methods and how to configure them.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide guidance on configuring authentication methods.
  SOAMANAGER: Use the SOAMANAGER transaction in SAP to manage web service configurations, including security settings.
  Web Service Client Logs: Review logs on the client side to gather more information about the authentication method being attempted and any additional error messages that may provide context.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.