Screen Identifier
If set to true, this element will be used to detect the screen. The identifier element should be a static output field that is unique to this screen. For example, if the screen has a unique heading, it can be used as the identifier. At least one element on the screen must be marked as an identifier before you can save the screen. When appropriate, you can use a combination of several elements to uniquely identify the screen.
Promptable? NO
Possible Values: Any combination of unique screen elements
Bindable? NO
Products: Genie