How To Fix WFCS204 - List display: ALV classic

SAP Error Message - Details

• Message type: E = Error

• Message class: WFCS - Message Class for Store Forecasting (Dev. Package WFCS)

• Message number: 204

• Message text: List display: ALV classic

Self-Explanatory Message

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• What is the cause and solution for SAP error message WFCS204 - List display: ALV classic ?

  SAP Error Message: WFCS204
  
  Text: List display: ALV classic
  
  Cause
  The error message WFCS204 typically occurs in SAP Workflow when the system tries to display a list using the ALV (ABAP List Viewer) in its classic mode, but the environment or the program expects a different ALV display method or the ALV object is not properly instantiated.
  In many cases, this message is informational or a warning indicating that the list display is using the "ALV classic" mode rather than the newer ALV Grid or ALV Object Model. It can also appear if the ALV function module or class used is outdated or incompatible with the current SAP GUI or workflow context.
  
  When does it occur?
  
  When a workflow step or a report tries to display a list using an ALV function module or class that triggers the classic ALV display.
  When the ALV container or grid is not properly created or the display method is not supported in the current environment.
  Sometimes during workflow task processing or when displaying task lists or logs.
  
  
  Solution
  
  
  Check ALV Display Method:
  
  If you are developing or customizing the workflow or report, consider switching from the classic ALV function modules (like REUSE_ALV_LIST_DISPLAY) to the newer ALV Grid classes (like CL_GUI_ALV_GRID).
  The newer ALV Grid provides better UI and integration with SAP GUI.
  
  
  
  Update or Adjust the Program:
  
  If the program or workflow step is calling an old ALV function module, update it to use the modern ALV classes.
  Ensure that the ALV container is properly instantiated and the display method is correctly called.
  
  
  
  Check SAP GUI Version:
  
  Sometimes, older ALV displays may not work properly with newer SAP GUI versions.
  Make sure your SAP GUI is up to date and compatible with the ALV display method used.
  
  
  
  Workflow Configuration:
  
  If this message appears during workflow task processing, check the workflow container and the method used to display lists.
  Adjust the workflow step to use a more modern ALV display method if possible.
  
  
  
  SAP Notes and Support:
  
  Search for SAP Notes related to WFCS204 for any patches or corrections.
  Sometimes SAP provides corrections or recommendations for ALV display issues in workflows.
  
  
  
  
  Related Information
  
  
  ALV (ABAP List Viewer): A tool in SAP to display lists in a user-friendly way. There are two main types:
  
  Classic ALV: Function module based, older technology.
  ALV Grid: Object-oriented, more flexible and modern.
  
  
  
  Common ALV Function Modules:
  
  REUSE_ALV_LIST_DISPLAY (classic)
  REUSE_ALV_GRID_DISPLAY (grid)
  
  
  
  Common ALV Classes:
  
  CL_GUI_ALV_GRID
  CL_SALV_TABLE
  
  
  
  Workflow and ALV:
  
  Workflow tasks sometimes display lists or logs using ALV.
  Proper ALV display requires correct container and GUI control handling.
  
  
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Workflow or program uses classic ALV display method which may be outdated or incompatible.
  
  
  Solution
  Update to ALV Grid display methods, ensure proper container instantiation, update SAP GUI.
  
  
  Related
  ALV function modules/classes, SAP GUI version, workflow container configuration.
  
  
  
  
  If you provide the exact context or code snippet where WFCS204 occurs, I can help with a more precise solution or code example.