Hi, here is the data as a result of calling api Notification History endpoint. notificationhistory.json First of all, when our server receives a notification for the first CONSUMPTION_REQUEST, it responds with 200. After that, if the same notification comes in, it is treated as a duplicate reception and responds with 500. The initial CONSUMPTION_REQUEST notification attempt for a particular transactionid results in "sendAttemptResult": "SUCCESS." And Apple try the same notification after we get the results, so the data comes like this "sendAttemptResult": "UNSUCCESSFUL_HTTP_RESPONSE_CODE" May I know why Apple are retrying 5 times even though i received the notification data sent by Apple successfully? Thank you for your reply.