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24046: Tool <value> cannot use VB expressions for services

Tools that use VB expressions, such as Calculate Field, cannot use VB expressions in 64-bit ArcGIS products (ArcGIS for Server, ArcGIS for 64-bit Background Processing, and ArcGIS Runtime).


  • If your tool is not using a VB expression, you can ignore this warning.
  • If your tool uses a VB expression, you must modify your task to use Python. Geoprocessing services and packages built for ArcGIS Runtime can use the following instructions to update the task.
    • Remove the task from the Service Editor.
    • Edit the original tool.
    • Replace the VB expression with an equivalent Python expression.
    • Rerun the tool.
    • Add the result back into the Service Editor and finish publishing your service.

Tools executed in 64-bit Background Processing need to be rerun using a Python expression.

More information

Learn more about Calculate Field examples

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