Hi, Our app that implemented in-app payment has been reviewed and passed and is currently in operation. However, there is a problem with the App Store server notification V2. According to the url https://developer.apple.com/documentation/appstoreservernotifications/responding_to_app_store_server_notifications, it is written as follows. "When you set up the endpoints on your server to receive notifications, configure your server to send a response. Use HTTP status codes to indicate whether the App Store server notification post succeeded: Send HTTP 200, or any HTTP code between 200 and 206, if the post was successful. Send HTTP 50x or 40x to have the App Store retry the notification, if the post didn't succeed. The system considers all other HTTP codes an unsuccessful post. Your server isn’t required to return a data value. If the App Store server doesn’t receive a success response from your server after the initial notification attempt, it retries as follows: For version 2 notifications, it retries five times, at 1, 12, 24, 48, and 72 hours after the previous attempt." We are sending an HTTP status code to the Apple server by 200 or 40x or 50x when we receive an Apple notification from the server as per the document. Nevertheless, Apple Server continues to send us 5 times App Store server notifications for each transaction. I would appreciate it if you could share how we can do it. Also, we can provide the implementation code of our server through code-level support. Thank you for your support.