How To Fix SRT_WSP406 - Invalid value "&1" for transport protocol of WSDL request

SAP Error Message - Details

• Message type: E = Error

• Message class: SRT_WSP - Messages for SRT WSP

• Message number: 406

• Message text: Invalid value "&1" for transport protocol of WSDL request

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_WSP406 - Invalid value "&1" for transport protocol of WSDL request ?

  The SAP error message SRT_WSP406 indicates that there is an invalid value for the transport protocol specified in a WSDL (Web Services Description Language) request. This error typically occurs when the system is trying to process a web service request, and the transport protocol defined in the WSDL does not match the expected values.
  Cause:
  The error can be caused by several factors:
  
  Incorrect WSDL Configuration: The WSDL file may specify a transport protocol that is not supported or recognized by the SAP system.
  Typographical Errors: There may be a typo in the transport protocol value in the WSDL.
  Unsupported Protocol: The specified transport protocol (e.g., HTTP, HTTPS, SOAP, etc.) may not be enabled or supported in the SAP system.
  Version Mismatch: The WSDL may be designed for a different version of the web service that is not compatible with the current SAP system.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check the WSDL File:
  
  Open the WSDL file and verify the transport protocol specified in the <soap:binding> or similar sections.
  Ensure that the protocol is one of the supported protocols (e.g., HTTP, HTTPS).
  
  
  
  Correct the Protocol:
  
  If you find a typo or an unsupported protocol, correct it to a valid value that the SAP system can recognize.
  
  
  
  Update Service Configuration:
  
  If you are using a service definition in SAP, ensure that the service is configured correctly to use the expected transport protocol.
  You can check the service configuration in transaction SOAMANAGER.
  
  
  
  Check System Settings:
  
  Ensure that the necessary transport protocols are enabled in the SAP system. This can be done in the system settings or configuration.
  
  
  
  Test the Web Service:
  
  After making the necessary changes, test the web service again to see if the error persists.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific details on supported transport protocols and configurations.
  
  
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SOAMANAGER for service management and SICF for checking HTTP services.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on this error.
  Web Service Configuration: Familiarize yourself with the web service configuration in SAP, including how to manage WSDL files and service endpoints.
  
  If the issue persists after following these steps, consider reaching out to SAP support or consulting with a technical expert who specializes in SAP web services.