I'm developing an API to receive App Store server notifications for App Store subscriptions and am testing it in my dev environment using the sandbox function. One thing I want to verify is the notification retry mechanism as per this piece of documentation: https://developer.apple.com/documentation/appstoreservernotifications/responding_to_app_store_server_notifications. I recently returned some non-200 responses to some notification requests and expected to see retries of those requests (the docs state retries at 1, 12, 24, 48, and 72 hours for v2 notifications). However, 12 hours later I haven't a single retry. Should I expect retries in the sandbox environment? I'm reticent to go live until I can confirm retries work as advertised and I understand their behaviour. Kind regards Dan Poxton