Hello. Currently, I am testing for the transition to the App Store Server API(v1/transactions/{transactionId}) as the verifyReceipt API we are utilizing has become deprecated. API currently in use: https://developer.apple.com/documentation/appstorereceipts/verifyreceipt API planned to switch to: https://developer.apple.com/documentation/appstoreserverapi/get_transaction_info I am doing the testing in the sandbox, but I cannot acquire a valid transaction_id with the App Store Server API. Below, I am detailing what I conducted. 1.I call the verifyReceipt API and receive a response. ※Here's a part of the response. The product_id is a dummy. "latest_receipt_info": [ { "quantity": "1", "product_id": "dummy_product_id", "transaction_id": "2000000497573524", "original_transaction_id": "2000000293926363", "purchase_date": "2024-01-11 03:06:43 Etc/GMT", "purchase_date_ms": "1704942403000", "purchase_date_pst": "2024-01-10 19:06:43 America/Los_Angeles", "original_purchase_date": "2023-03-10 04:11:01 Etc/GMT", "original_purchase_date_ms": "1678421461000", "original_purchase_date_pst": "2023-03-09 20:11:01 America/Los_Angeles", "expires_date": "2024-01-11 03:11:43 Etc/GMT", "expires_date_ms": "1704942703000", "expires_date_pst": "2024-01-10 19:11:43 America/Los_Angeles", "web_order_line_item_id": "2000000047921358", "is_trial_period": "false", "is_in_intro_offer_period": "false", "in_app_ownership_type": "PURCHASED", "subscription_group_identifier": "20230239" } ], 2.I call the App Store Server API. Request used with transaction_id: https://api.storekit-sandbox.itunes.apple.com/inApps/v1/subscriptions/2000000497573524 Request used with original_transaction_id: https://api.storekit-sandbox.itunes.apple.com/inApps/v1/subscriptions/2000000293926363 3.I receive an error stating the transaction id cannot be found. Response: 404 Not Found: "{"errorCode":4040010,"errorMessage":"Transaction id not found."}" Additionally, as I found similar questions, I also tried shifting the numbers of the transaction_id and original_transaction_id when calling the App Store Server API. However, this did not resolve the error I received. https://developer.apple.com/forums/thread/84812 https://developer.apple.com/forums/thread/68944 In this case, what should I do with the transactionId to get the Transaction information? I would appreciate it if anyone who knows can enlighten me. Thank you in advance.