In app purchases not works on iOS 7 return error 'Invalid product identifier: (null)'

Question

I test IAP on 6.1 emulator all ok but if switch to ios7 it return error when cal buy method

 Terminating app due to uncaught exception
 'NSInvalidArgumentException', reason: 'Invalid product identifier:
 (null)'

Answer 1

iOS 7 simulator disables In App Purchase Sandbox mode. Use a device.