How To Fix SRT_WSP737 - Invalid call of method &1 in class &2 for instance type &3

SAP Error Message - Details

• Message type: E = Error

• Message class: SRT_WSP - Messages for SRT WSP

• Message number: 737

• Message text: Invalid call of method &1 in class &2 for instance type &3

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 SRT_WSP737 - Invalid call of method &1 in class &2 for instance type &3 ?

  The SAP error message SRT_WSP737 indicates that there is an invalid call of a method in a specific class for a given instance type. This error typically arises in the context of SAP's web services framework, particularly when dealing with web service calls and the associated methods in the service classes.
  Cause:
  
  Incorrect Method Call: The method being called does not exist in the specified class or is not accessible due to visibility (e.g., it might be private).
  Wrong Instance Type: The instance type specified does not match the expected type for the method being called.
  Configuration Issues: There may be issues with the configuration of the web service or the service interface.
  Version Mismatch: The version of the service being called may not match the expected version in the system.
  Transport Issues: If the code was recently transported from another system, there may be inconsistencies or missing objects.
  
  Solution:
  
  Check Method Existence: Verify that the method specified in the error message exists in the class indicated and that it is correctly implemented.
  Review Instance Type: Ensure that the instance type being used is correct and matches the expected type for the method.
  Check Visibility: Make sure that the method is public or has the appropriate visibility to be called from the context in which it is being invoked.
  Configuration Review: Review the web service configuration in transaction SOAMANAGER to ensure that the service is correctly set up and that the bindings are correct.
  Debugging: Use the debugger to trace the execution and identify where the invalid call is being made. This can help pinpoint the exact issue.
  Check Transport Logs: If the issue arose after a transport, check the transport logs for any errors or missing objects.
  Consult Documentation: Review the SAP documentation for the specific web service and method to ensure that you are using it correctly.
  
  Related Information:
  
  Transaction Codes: 
  
  SOAMANAGER: For managing web service configurations.
  SE80: For checking the class and method implementation.
  SE37: For function modules if applicable.
  
  
  SAP Notes: Search for relevant SAP Notes that may address known issues related to this error message.
  Community Forums: Check SAP Community or other forums for similar issues and solutions shared by other users.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance, providing them with the error details and any relevant logs or traces.