Jen Kuntz explains Originating fields in SmartList at jenkuntz.ca/2019/04/originating-fields-in-smartlist/
Hint: If you’re using Smartlists much, they matter.
Originating fields in SmartList – JenKuntz.ca
Archived post from 2019. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.