How To Fix WXPB218 - Function cannot be executed in lead columns

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 218

• Message text: Function cannot be executed in lead columns

What causes this issue?

The cursor is positioned on a lead column. The function selected cannot
be executed in this column.

System Response

If you want to switch on or off the lock for a value, position the
cursor on the required data cell, subtotal or total.
If you want to switch on or off the readiness for input of a total,
position the cursor on the required subtotal or total.

How to fix this error?

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

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 WXPB218 - Function cannot be executed in lead columns ?

  SAP Error Message:
  
  WXPB218 - Function cannot be executed in lead columns
  
  Cause:
  This error occurs when a user tries to execute a function or action on a "lead column" in an ALV (ABAP List Viewer) grid or a similar SAP UI element where such operations are restricted. Lead columns are typically the first columns in a table or grid that serve as identifiers or key fields, and certain functions (like sorting, filtering, or specific context menu actions) are not allowed on these columns to maintain data integrity or UI consistency.
  
  Explanation:
  
  Lead columns are special columns in ALV grids or SAP tables that often contain key or primary data.
  Some functions (e.g., certain toolbar buttons, context menu options, or user commands) are disabled or not applicable on these columns.
  Attempting to execute these functions on lead columns triggers the WXPB218 message.
  
  
  Solution:
  
  
  Avoid executing the function on lead columns:
  
  Ensure that the function or action is performed on non-lead columns where it is allowed.
  
  
  Check the UI design or code:  
  
  If you are a developer, review the code that triggers the function.  
  Add checks to prevent the function from being executed when the selected column is a lead column.  
  Use methods like CL_GUI_ALV_GRID->GET_SELECTED_COLUMNS or check the column properties to identify lead columns.
  
  
  
  User training:
  
  Inform users about the limitation and guide them to select appropriate columns before executing the function.
  
  
  Customization (if applicable):
  
  If the function needs to be enabled on lead columns, this might require a change in the program logic or enhancement, but this is generally not recommended as it may violate SAP UI standards.
  
  
  
  Related Information:
  
  ALV Grid Control: Lead columns are often the first columns in ALV grids, such as row headers or key fields.
  SAP Notes: Check SAP Notes or OSS messages for any updates or patches related to WXPB218.
  Function Modules / Classes: If you are developing or debugging, look into classes like CL_GUI_ALV_GRID or function modules related to ALV events.
  User Interface Guidelines: SAP UI guidelines restrict certain operations on lead columns to avoid inconsistent states.
  
  
  Summary:
  
  Cause: Attempt to execute a restricted function on a lead column in an ALV or SAP grid.
  Solution: Perform the function on non-lead columns; adjust code or user behavior accordingly.
  Additional: Review SAP documentation on ALV grid behavior and lead column restrictions.
  
  
  If you provide the exact context (transaction, program, or function), I can help with more specific guidance.