Scraped from https://requester.mturk.com/create/projects/new and https://requestersandbox.mturk.com/create/projects/new
IDs that exist for "live" mturk do not work for "sandbox" mturk, and vice versa. It's a pain, but for a given desired qualification, you'll have to use the correct id depending on whether you're using sandbox or live mode at the time.
The qualification ids are the values for the "value" property.