The onError event is called whenever an error occurs during an operation.
Syntax
onError SCode, Description, Source, CancelDisplay
Parameters
SCode An integer that indicates the status code of the error.
Description A String that indicates a description of the error.
Source A String that indicates the query or command that caused the error.
CancelDisplay A Boolean value, which if set to True, that prevents the error from being displayed in a dialog box.