It will probably produce a form error, where you can use the forms on error event to substitute the default message with your own. I think it is dataerr, but to be sure, enter a
[tt]msgbox dataerr[/tt]
within the routine to test
[tt]private sub form_error(dataerr as integer, response as integer)
if dataerr=3314 then
msgbox "my custom message"
response=acdataerrcontinue ' turn off default message
end if
end sub[/tt]
Roy-Vidar