What determine whether an app is running under sandbox mode?

Question

I've implemented in app purchases in my app. When I test on my device , all alerts that are popped up by StoreKit have a comment in it saying that the app is running in sandbox mode.I am testing a package that I believe is a ad-hoc distribution (I use test flight)

As far as I understands , A user that is not a "test user" can't make purchases in sand box mode. That is not what I want in a package that is distributed through the app store.

What triggers sandbox mode in the context of InApp Purchase?

Answer 1

When you submit it to the app store it will be taken out of sandbox mode. You do not need to do anything. I have the exact same flow in my app and use test flight. It won't work through test flight, but apple automatically enables in-app purchase when you submit.