How To Fix SWDP_WB_TOOL116 - The parameters of event handler & and event & are not identical

SAP Error Message - Details

• Message type: E = Error

• Message class: SWDP_WB_TOOL - Web Dynpro: Messages for Workbench Tools

• Message number: 116

• Message text: The parameters of event handler & and event & are not identical

What causes this issue?

The signatures of the event handler and assigned event do not match up
with regard to parameter number, paramater typing, or parameter names,
or the Optional property or the default value of the parameter are
different. .

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Match up the parameters of the event handler with those of the event.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SWDP_WB_TOOL116 - The parameters of event handler & and event & are not identical ?

  The SAP error message SWDP_WB_TOOL116 indicates that there is a mismatch between the parameters of an event handler and the event it is supposed to handle. This typically occurs in the context of SAP Web Dynpro applications, where event handlers are defined to respond to specific events triggered by user interactions or system processes.
  Cause:
  The error arises when:
  
  The event handler method is defined with a different signature (parameters) than what is expected for the event it is handling.
  The event itself has been modified (e.g., parameters added or removed) but the corresponding event handler has not been updated accordingly.
  There may be a typo or misconfiguration in the event handler binding.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Event Definition: 
  
  Go to the event definition in the Web Dynpro component and verify the parameters defined for the event.
  
  
  
  Check Event Handler Method:
  
  Open the method that is defined as the event handler and ensure that its parameters match exactly with those defined in the event. This includes the number of parameters, their types, and their order.
  
  
  
  Update Event Handler:
  
  If there are discrepancies, update the event handler method to match the event definition. This may involve adding, removing, or changing the parameters.
  
  
  
  Rebind Event Handler:
  
  If you have made changes to the event or the handler, ensure that the event handler is correctly bound to the event in the component configuration.
  
  
  
  Check for Typos:
  
  Look for any typographical errors in the method name or parameter names that could lead to mismatches.
  
  
  
  Rebuild and Test:
  
  After making the necessary changes, rebuild the application and test it to ensure that the error is resolved.
  
  
  
  Related Information:
  
  Web Dynpro Documentation: Refer to the official SAP documentation for Web Dynpro to understand the structure of events and event handlers.
  Debugging: Use the debugging tools in the SAP environment to trace the execution flow and identify where the mismatch occurs.
  SAP Community: Engage with the SAP Community forums for additional insights and solutions from other developers who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the SWDP_WB_TOOL116 error and ensure that your event handlers are correctly configured to handle the corresponding events.