苹果内购丢单问题
问题描述：
在苹果内购财务报表里，10月13日有4笔订单，但是CRM里只看到了3笔。
问题分析：
用户付款后，网络不好，或者退出应用，导致没调支付接口。后台没有查到用户请求接口的记录。
内购流程设计有问题，应该在服务校验的时候生成订单号，接着，用户付款后，再把订单号和票据传给后台。这样就不会出现苹果内购付款了，但是后台完全查不到这个订单的情况。
解决方案：
iOS Invoice lookup API
Get a customer’s in-app purchases from a receipt using the order ID.
URL
GET https://api.storekit.itunes.apple.com/inApps/v1/lookup/{orderId}
Sandbox URL
GET https://api.storekit-sandbox.itunes.apple.com/inApps/v1/lookup/{orderId}
The customer’s order ID from an App Store receipt for in-app purchases.
Discussion
Important
This endpoint isn’t available in the sandbox environment.
Call this endpoint to identify and validate a customer’s in-app purchases, based on their order ID.
When a customer contacts you for support, ask for their order ID and use that value to call this endpoint. Customers can retrieve their order ID’s from their purchase history on the App Store; for more information, see See your purchase history for the App Store, iTunes store, and more. The App Store also sends customers an email receipt with an order ID each time they make in-app purchases.
A successful response with an OrderLookupStatus value of 0 contains an array of one or more signed transactions for the in-app purchase based on the order ID. Use the decoded transaction, JWSTransactionDecodedPayload, to identify information such as the productId and purchaseDate that you can use to provide customer support.
A response with an OrderLookupStatus value of 1 has an empty signed transactions array.
The App Store Server API returns information based on the customer’s in-app purchase history regardless of whether the customer installed, removed, or reinstalled the app on their devices.
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