I found error when build on Xcode
case SKErrorPrivacyAcknowledgementRequired:
return 11;
case SKErrorUnauthorizedRequestData:
return 12;
case SKErrorInvalidSignature:
case SKErrorInvalidOfferPrice:
case SKErrorInvalidOfferIdentifier:
return 13;
case SKErrorMissingOfferParams:
return 14;
This code is missing from SKError from Frameworks > StoreKit > SKError.h