StoreKit In App Purchase invalid product identifiers [duplicate]

Answer 1

Is your In App Purchase "Cleared for Sale"? That's the setting that I didn't check first time.

Answer 2

The contract for paid applications must be in effect in order to receive data about the in app purchases configured.

This worked for me. I had the exact same problem.

Answer 3

I discovered today another thing that can cause this sort of problem. Some times, for strange reasons, the app gets corrupted and all tries to buy something end in error. I solved my problem deleting the app from the device, cleaning the build on Xcode and building it again to the device.

Answer 4

Did you log out of the AppStore from Settings.app? Only when you log out, you will be prompted for logging in again.

Is In-App purchases enabled for your App ID? App ID with wild card (*) cannot be enabled for In-App Purchases. For your app, you should create a new App ID.

My two cents here: http://blog.mugunthkumar.com/coding/iphone-tutorial-%e2%80%93-in-app-purchases/