invalidProductIdentifiers property
Stores product identifiers in the productIdentifiers
from SKRequestMaker.startProductRequest that are not recognized by the App Store.
The App Store will not recognize a product identifier unless certain criteria are met. A detailed list of the criteria can be found here https://developer.apple.com/documentation/storekit/skproductsresponse/1505985-invalidproductidentifiers?language=objc. Will be empty if all the product identifiers are valid.
Implementation
@JsonKey(defaultValue: <String>[])
final List<String> invalidProductIdentifiers;