Hi, Sam here. Today, I want to talk about something all too familiar for developers working with in-app purchases—StoreKit errors.

Errors are inevitable, especially when working with third-party services like StoreKit. That’s why having a solid error-handling strategy is crucial especially when working with a library like StoreKit. I often refer to StoreKit as to a black-box where anything can happen. In this article, I’ll show you how to handle failed transactions using StoreKit and provide users with the right feedback when errors occur.