When adding a select field to a Suitelet form, can you apply a filter to the "source"? Or do you need to do a search and then use Field.addSelectOption() for each result?

form.addField({
      id: 'custpage_field_id',
      label: 'Field Label',
      type: serverWidget.FieldType.SELECT,
      container: 'custpage_field_group',
      source: 'customrecord_example_record'
    })

nope. use addSelectOption instead of a source

@Shane Brown As @battk mentioned, one approach would be to do a search and filters the results or options you want to show there and then use addSelectOption.