Hello, The guide document guides 'This endpoint isn't available in the sandbox environment.' Why does the Sandbox URL exist? Will the order ID be created if purchase occurs in the Sandbox environment? https://developer.apple.com/documentation/appstoreserverapi/look_up_order_id

In what cases does the transaction in the 'signedTransactions' property array respond with more than one transaction? Is it the case that the in-app purchase product type is 'Auto-Renewable Subscription'? https://developer.apple.com/documentation/appstoreserverapi/look_up_order_id https://developer.apple.com/documentation/appstoreserverapi/orderlookupresponse

I received a refund notification for a consumable product, but the latest_receipt_info property does not exist in the unified_receipt property, or there are no transactions that match the original_transaction_id property value. Are the original_transaction_id property values really refunded? How can I check the cancelation_date_ms value and cancelation_reason value? V2 Notifications cannot be changed. I'm constantly struggling because of this phenomenon. Please reply. https://developer.apple.com/documentation/storekit/in-app_purchase/original_api_for_in-app_purchase/handling_refund_notifications

Hello, I'm using 'App Store Server Notifications V2'. I have a question about 'CONSUMPTION_REQUEST' notification in 'notificationType'. I was wondering if there would be any impact on refunds if I received this notification and didn't respond. (Always refund etc..)