How To Fix SRT_WSP3039 - Matching interface changed from '&1'{'&2'} to '&3'{'&4'}

SAP Error Message - Details

• Message type: E = Error

• Message class: SRT_WSP3 - SRT: Web Service Configuration Messages 3

• Message number: 039

• Message text: Matching interface changed from '&1'{'&2'} to '&3'{'&4'}

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SRT_WSP3039 - Matching interface changed from '&1'{'&2'} to '&3'{'&4'} ?

  The SAP error message SRT_WSP3039 indicates that there has been a change in the matching interface for a web service. This typically occurs in scenarios where the web service interface has been modified, such as changes in the structure of the input or output parameters, or changes in the service definition itself.
  Cause:
  
  Interface Change: The most common cause of this error is that the web service interface has been modified after it was initially defined. This could include changes to the data types, the addition or removal of parameters, or changes in the service operations.
  Version Mismatch: If there are multiple versions of the service or if the service consumer is using an outdated version of the interface, this error can occur.
  Configuration Issues: Incorrect configuration in the service registry or service consumer settings can also lead to this error.
  
  Solution:
  
  Check Interface Definition: Review the web service interface definition in the SAP system. Ensure that the interface being called matches the expected definition. If changes have been made, update the service consumer to align with the new interface.
  Update Service Consumer: If you are consuming the web service from an external application or another SAP system, ensure that the consumer is updated to use the latest version of the service interface.
  Regenerate Proxy: If you are using a proxy in SAP, regenerate the proxy classes to reflect the changes in the web service interface.
  Test the Service: Use tools like SOAP UI or Postman to test the web service independently to ensure it is functioning as expected with the new interface.
  Check for Multiple Versions: If there are multiple versions of the service, ensure that the correct version is being called by the consumer.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on handling interface changes.
  Web Service Configuration: Review the configuration settings in the SAP PI/PO (Process Integration/Process Orchestration) if applicable, as this can affect how services are matched and called.
  Documentation: Refer to the documentation for the specific web service to understand the expected input and output parameters and any recent changes that may have been made.
  
  By following these steps, you should be able to resolve the SRT_WSP3039 error and ensure that your web service calls are functioning correctly.