How To Fix SPXN146 - WSDL invalid. Only one processing type can be set as default

SAP Error Message - Details

• Message type: E = Error

• Message class: SPXN - Proxy Generation

• Message number: 146

• Message text: WSDL invalid. Only one processing type can be set as default

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SPXN146 - WSDL invalid. Only one processing type can be set as default ?

  The SAP error message SPXN146, which states "WSDL invalid. Only one processing type can be set as default," typically occurs in the context of SAP PI/PO (Process Integration/Process Orchestration) when dealing with Web Services and WSDL (Web Services Description Language) files. This error indicates that there is a configuration issue with the WSDL file, specifically regarding the processing types defined within it.
  Cause:
  
  Multiple Default Processing Types: The error usually arises when the WSDL file has multiple processing types defined as default. In a WSDL, you can specify different processing types (like SOAP, REST, etc.), but only one can be marked as the default.
  WSDL Configuration Issues: There may be issues in the way the WSDL is structured or generated, leading to conflicts in the processing types.
  Incorrect Service Configuration: The service configuration in SAP PI/PO might be incorrectly set up, leading to ambiguity in processing types.
  
  Solution:
  
  
  Review the WSDL File: Open the WSDL file and check the <wsdl:binding> section. Ensure that only one processing type is marked as default. If there are multiple entries with the default attribute, remove or correct them.
  
  
  Regenerate the WSDL: If the WSDL is generated from a service definition, consider regenerating it to ensure that it is correctly structured. This can often resolve issues related to misconfigurations.
  
  
  Check Service Definitions in SAP: Go to the service definitions in SAP PI/PO and ensure that the processing types are correctly configured. Make sure that only one processing type is set as default.
  
  
  Test the WSDL: Use tools like SOAP UI or Postman to test the WSDL and ensure that it is functioning correctly without errors.
  
  
  Consult Documentation: Refer to SAP documentation or community forums for specific guidance related to your version of SAP PI/PO, as there may be version-specific nuances.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide patches or updates.
  WSDL Validation Tools: Use online WSDL validation tools to check for structural issues in your WSDL file.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered and resolved similar issues.
  
  By following these steps, you should be able to identify and resolve the SPXN146 error in your SAP environment.