At what point do you want to insure that data has been entered?
See Chip Pearson's page for general information on Events in Excel:
http://www.cpearson.com/excel/events.htm
Some user action has to trigger your check that the data is there or not.
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regards,
Tom Ogilvy
"Fred" wrote in message
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How do i require a user to enter a data in a field in Excel?