Any opportunity to register a callback url to purchase an app on iTunes Connect for supplies?

Question

We are reading a receipt from StoreKit about sending NSData to our server. There we check the data https://github.com/chrismaddern/iOS-Receipt-Validator-PHP , after which we make a booking transaction in our cloud system and note the completion of the transaction. But what if the data connection of the client (user) breaks during the purchase transaction. Then we will never receive a request with the receipt data, and we will not be able to complete the process on our server side. Thus, it would be great if Apple submitted feedback for each new transaction in the App Purchase application. Thus, we can check the time when customers bought the product in the application. Ideas?