Slightly SuiteScript adjacent question - I am creating a custom record and adding a custom field of List/Record sourcing from Inventory Numbers. I am trying to filter this field to only show options which are currently On Hand, but the only Filter Using option available is the Item. 1) is there a way to filter in this way without using script? 2) if no, is there a way to have a proper List/Record field on the record, but have a UE beforeLoad run on Create only to set what the available options are? Ie run a saved search and dump the results into the drop down?

Standard suitescript approach is to use suitescript to create a field that you fill with your favored select options. Then later copy the selected options into your actual field.