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

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

I call transaction information for several apps. And I don't have environment information. So I'm calling the sandbox environment as an official guide. However, unlike the official guide, certain apps sometimes succeed by calling an endpoint using a production URL to receive an error code 401 and calling an endpoint using a sandbox environment. Why does this difference occur unlike the official guide? Because of this difference, sometimes it's a production environment and JWT hasn't expired, but I get a 401 error and call the sandbox environment. 2. Please let me know the solution.