Make a control required

Microsoft Office InfoPath 2003

, you must make the control's field required. Depending on how you want to display error alerts and the flexibility of your form, you can make the field required by displaying either a standard error message (a red asterisk or dashed red border and a ScreenTip that says "Cannot be blank") or a custom error message.

Note  If your form prevents you from selecting the Cannot be blank check box in the Control Properties dialog box, you will need to display a custom error message.

ShowDisplay a standard error message when a control is left blank

ShowDisplay a custom error message when a control is left blank

Note  The information in this topic may not apply if you are working with a form designed using Microsoft Office InfoPath 2003 without the service pack installed. Learn more