expression.SetWarnings(WarningsOn)
expression Required. An expression that returns one of the objects in the Applies To list.
WarningsOn Required Variant. Use True (–1) to turn on the display of system messages and False (0) to turn it off.
Remarks
For more information on how the action and its argument work, see the action topic.
If you turn the display of system messages off in Visual Basic, you must turn it back on, or it will remain off, even if the user presses CTRL+BREAK or Visual Basic encounters a breakpoint. You may want to create a macro that turns the display of system messages on and then assign that macro to a key combination or a custom menu command. You could then use the key combination or menu command to turn the display of system messages on if it has been turned off in Visual Basic.
Example
The following example turns the display of system messages off:
DoCmd.SetWarnings False