Combo Box Control.
The NotInList event occurs when the user enters a value in the text box portion of a combo box that isn’t in the combo box list.
Note The NotInList event applies only to controls on a form, not controls on a report.
This event enables the user to add a new value to the combo box list.
The LimitToList property must be set to Yes for the NotInList event to occur.
The NotInList event doesn’t trigger the Error event.
The NotInList event occurs for combo boxes whose LimitToList property is set to Yes after you enter a value that is not in the list and attempt to move to another control or save the record. It occurs after all the Change events for the combo box.
BeforeUpdate, AfterUpdate Events; Change Event; LimitToList Property.