Before you begin making payments, you need to set the IntegratorName to the name of the company deploying cash register or Point-of-Sale solution, for example, Retail Consultancy Corp.
You can do this as part of the didFinishLaunchingWithOptions method, by setting Adyen.sharedInstance.integratorName to the name of the integrator.
func application(_ application: UIApplication,
didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
Adyen.sharedInstance().integratorName = "Retail Consultancy Corp."
return true
}