I’m trying to create questions that ask for the state, district, and town. Since the number of towns is 6000, I want to upload an external file that will populate the answer choices for these three questions.
Welcome to the community, @bird_rao! Please be informed that the select_one_from_file should work with both your Web Form as well as Collect android app. Maybe you should also be able to see a workaround discussed previously here:
As an alternate, you could also use the select_one_external to cascade your long list of choices as outlined in the post discussed previously: