How To Fix SPXN173 - WSDL invalid. Initial communication type not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: SPXN - Proxy Generation

• Message number: 173

• Message text: WSDL invalid. Initial communication type not supported

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SPXN173 - WSDL invalid. Initial communication type not supported ?

  The SAP error message SPXN173 "WSDL invalid. Initial communication type not supported" typically occurs when there is an issue with the Web Services Description Language (WSDL) file that is being used in an SAP system. This error indicates that the WSDL file does not conform to the expected structure or that the initial communication type specified in the WSDL is not supported by the SAP system.
  Causes:
  
  Invalid WSDL Structure: The WSDL file may have syntax errors or may not be properly formatted.
  Unsupported Communication Type: The WSDL may specify a communication type (e.g., SOAP, REST) that is not supported by the SAP system or the specific service being called.
  Version Mismatch: The WSDL may be generated for a different version of the service or may not be compatible with the SAP version you are using.
  Configuration Issues: There may be configuration issues in the SAP system that prevent it from processing the WSDL correctly.
  
  Solutions:
  
  Validate the WSDL: Use a WSDL validation tool to check for syntax errors or structural issues in the WSDL file.
  Check Communication Type: Ensure that the communication type specified in the WSDL is supported by your SAP system. If it is not, you may need to modify the WSDL or use a different service.
  Regenerate WSDL: If you have access to the service definition, try regenerating the WSDL file to ensure it is up to date and compatible with your SAP system.
  Review SAP Configuration: Check the configuration settings in your SAP system related to web services and ensure that they are correctly set up to handle the specified communication type.
  Consult Documentation: Refer to SAP documentation or support resources for guidance on the specific service you are trying to use and any known issues related to WSDL processing.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message SPXN173.
  Web Service Configuration: Review the configuration of web services in the SAP system, including service definitions and endpoint settings.
  Testing Tools: Use tools like SOAP UI or Postman to test the WSDL and the web service independently of the SAP system to isolate the issue.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance, providing them with details about the WSDL and the context in which the error occurs.