How does SmartFill work with extender windows?
Extender is a set of generic windows and fields. Suppose you used Extender to create two objects with forms, such as Vehicles and Drivers. Whenever you open an Extender window, you open Window1, and it re-arranges and aligns Field1 to Field25. If you open what you defined as Vehicles first, it will open in Extender’s Window1. If you then open Drivers, you will get Window2. Now close all the windows. If you open Drivers, you get that in Window1, and opening Vehicles would get you Window2. SmartFill has to get assigned in the Repository to a specific GP Window. So suppose you choose Extender’s Window1. Well, if you do a Vehicle Lookup against that window, and you open the Drivers object through Extender, the lookup for Vehicles will work in the Drivers window, which would be confusing. So you can use SmartFill when you have a simple use for Extender, and it will work in most cases if you have, say, just Vehicles and nothing else. That’s because you’ll only be opening Window1 with Vehicle
