How To Fix WXPB204 - Unlock another data cell first

SAP Error Message - Details

• Message type: E = Error

• Message class: WXPB - MAP Messages: SAP R/3 Enterprise Add-On

• Message number: 204

• Message text: Unlock another data cell first

Self-Explanatory Message

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• What is the cause and solution for SAP error message WXPB204 - Unlock another data cell first ?

  SAP Error Message:
  
  WXPB204 - Unlock another data cell first
  
  Cause:
  This message typically appears in SAP when working with ALV Grid Controls or editable table controls in a GUI status where the user tries to edit or unlock a data cell while another cell is still locked or in edit mode. SAP requires that only one cell or data field be unlocked (editable) at a time to maintain data consistency and avoid conflicts.
  In other words, the system prevents unlocking a new cell for editing before the previously unlocked cell is either saved or locked again.
  
  Explanation:
  
  When you edit data in an ALV grid or table control, the system locks the cell to prevent simultaneous edits.
  If you try to unlock or edit a different cell without first saving or locking the currently edited cell, SAP throws this message.
  This is a safeguard to ensure data integrity and proper handling of user input.
  
  
  Solution:
  
  Save or lock the currently unlocked cell first before attempting to unlock another cell.
  If you are a developer, ensure that your code logic:
  
  Checks if any cell is currently unlocked.
  Forces the user to save or cancel the current edit before allowing another cell to be unlocked.
  
  
  In custom ALV implementations, you can handle this by:
  
  Using methods like CHECK_CELL_LOCKED or similar to verify the lock status.
  Calling CHECK_CHANGED_DATA or CHECK_CELL_CHANGED to confirm changes are saved.
  Using SET_READY_FOR_INPUT or SET_CELL_LOCKED methods appropriately.
  
  
  
  
  Related Information:
  
  This message is common in editable ALV Grid Controls or Table Controls in SAP GUI.
  It is related to the locking mechanism of cells during inline editing.
  The message helps prevent data inconsistencies and ensures that only one cell is edited at a time.
  If you encounter this message frequently, review the user workflow or the custom code handling the ALV grid editing.
  SAP Note or documentation on ALV Grid editing and cell locking might provide additional insights.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Trying to unlock/edit a new data cell while another cell is still unlocked/being edited.
  
  
  Solution
  Save or lock the currently unlocked cell before unlocking another.
  
  
  Context
  Occurs in editable ALV Grid or Table Controls during inline editing.
  
  
  Prevention
  Implement checks in code to ensure only one cell is unlocked at a time.
  
  
  
  
  If you need help with a specific scenario or custom code, please provide more details about the ALV or table control usage.