How To Fix W/203 - Error when calling a grid control method

SAP Error Message - Details

• Message type: E = Error

• Message class: W/ -

• Message number: 203

• Message text: Error when calling a grid control method

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W/203 - Error when calling a grid control method ?

  SAP Error Message:
  
  W/203 Error when calling a grid control method
  
  Cause:
  This warning message typically occurs when an ABAP program or a dynpro (screen) tries to call a method on a grid control (such as a CL_GUI_ALV_GRID or CL_GUI_CUSTOM_CONTAINER control) that is either:
  
  Not yet instantiated or initialized properly.
  Already freed or deleted.
  Called at an inappropriate time in the program flow (e.g., before the control is fully created or after it has been destroyed).
  The method parameters are incorrect or the control is in an inconsistent state.
  
  In other words, the grid control object reference is invalid or the method call is not allowed in the current context.
  
  Common Scenarios:
  
  Calling methods on the grid control before calling CREATE_OBJECT or before the container is ready.
  Calling methods after the control has been freed or the screen has been closed.
  Incorrect handling of event methods or refreshing the grid control at the wrong time.
  Passing wrong parameters or missing required parameters in the method call.
  
  
  Solution:
  
  
  Check Object Instantiation:
  
  Ensure that the grid control object is properly created before calling any methods.
  Example:
  IF grid_control IS INITIAL.
    CREATE OBJECT grid_control
      EXPORTING
        i_parent = container.
  ENDIF.
  
  
  
  
  Check Object Lifetime:
  
  Make sure the object is not freed or set to INITIAL before the method call.
  Avoid calling methods after the screen or container is destroyed.
  
  
  
  Correct Method Usage:
  
  Verify that the method you are calling is valid for the grid control and that all required parameters are passed correctly.
  Refer to SAP documentation or class methods for correct usage.
  
  
  
  Event Handling:
  
  If the error occurs during event handling (e.g., user actions), ensure that the event handlers are properly registered and the control is ready.
  
  
  
  Debugging:
  
  Use the debugger to check the state of the grid control object before the method call.
  Check if the object reference is INITIAL or points to a valid instance.
  
  
  
  SAP Notes and Patches:
  
  Sometimes, this warning can be caused by known bugs in certain SAP kernel or GUI versions.
  Check SAP Notes for your SAP version for any relevant fixes or patches.
  
  
  
  
  Related Information:
  
  Classes involved: CL_GUI_ALV_GRID, CL_GUI_CUSTOM_CONTAINER, CL_GUI_DOCKING_CONTAINER, etc.
  Common methods: SET_TABLE_FOR_FIRST_DISPLAY, REFRESH_TABLE_DISPLAY, FREE, GET_SELECTED_ROWS, etc.
  SAP GUI and Kernel versions: Ensure your SAP GUI and kernel are up to date, as some grid control issues are fixed in patches.
  SAP Help Portal: Refer to the official SAP documentation for the grid control classes and their methods.
  Community and Forums: SAP Community Network (SCN) and other forums often have discussions on similar issues.
  
  
  Summary:
  The W/203 error when calling a grid control method is a warning indicating that the method call on the grid control object is invalid due to the object not being properly instantiated, already freed, or called at an inappropriate time. The solution involves ensuring proper object lifecycle management, correct method usage, and verifying the control's state before method calls.
  
  If you provide the exact code snippet or context where the error occurs, I can help you pinpoint the issue more precisely.