How To Fix WRF_FOLUPART013 - Error registering the ALV grid events

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_FOLUPART - Follow-Up/Replacement Material

• Message number: 013

• Message text: Error registering the ALV grid events

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WRF_FOLUPART013 - Error registering the ALV grid events ?

  SAP Error Message:
  
  WRF_FOLUPART013 - Error registering the ALV grid events
  
  Cause
  This error typically occurs when there is a problem during the registration of event handlers for an ALV (ABAP List Viewer) grid control in a Web Dynpro ABAP application or a similar SAP UI technology. The root causes can include:
  
  Incorrect or missing event handler method: The event handler method specified for the ALV grid events is not implemented or incorrectly referenced.
  ALV grid control not properly instantiated: The ALV grid control instance is not correctly created or initialized before event registration.
  Event registration called at an inappropriate time: Trying to register events before the ALV grid control is fully available or after it has been destroyed.
  Incompatible ALV grid version or patch level: Sometimes, inconsistencies or bugs in certain SAP kernel or UI component versions can cause event registration failures.
  Authorization or system issues: Rarely, missing authorizations or system inconsistencies can cause such errors.
  
  
  Solution
  To resolve the WRF_FOLUPART013 error, consider the following steps:
  
  
  Check Event Handler Implementation:
  
  Verify that the event handler methods for the ALV grid events are correctly implemented in the Web Dynpro component or ABAP class.
  Ensure the method signatures match the expected parameters for the ALV grid events.
  
  
  
  Verify ALV Grid Instantiation:
  
  Confirm that the ALV grid control is properly created and initialized before attempting to register events.
  For Web Dynpro ABAP, ensure the UI element (ALV grid) is correctly retrieved from the view and is not NULL.
  
  
  
  Correct Event Registration Timing:
  
  Register event handlers at the appropriate point in the component lifecycle, typically after the ALV grid control is fully instantiated but before it is rendered.
  Avoid registering events multiple times or after the control is destroyed.
  
  
  
  Check SAP Notes and Patches:
  
  Search for SAP Notes related to WRF_FOLUPART013 or ALV grid event registration issues.
  Apply any relevant patches or updates to the SAP kernel or UI components.
  
  
  
  Debugging:
  
  Use the ABAP debugger to trace the point of failure during event registration.
  Check the exact method call and parameters used for event registration.
  
  
  
  Authorization and System Checks:
  
  Ensure the user has the necessary authorizations to execute the relevant Web Dynpro components.
  Check system logs for any related errors or dumps.
  
  
  
  
  Related Information
  
  ALV Grid Control: The ALV grid is a powerful SAP UI control used to display tabular data with sorting, filtering, and event handling capabilities.
  Event Handling in Web Dynpro ABAP: Events such as on_user_command, on_double_click, or custom events can be registered to handle user interactions.
  SAP Notes: Always check the SAP Support Portal for notes related to ALV grid issues or the specific error message.
  Common SAP Transactions for Debugging:
  
  SE80 or SE24 to check component/class implementations.
  SE37 to test function modules if used.
  ST22 for dumps.
  SM21 for system logs.
  
  
  
  
  If you provide the context or code snippet where the error occurs, I can help you pinpoint the exact issue and solution.