According to https://developer.apple.com/documentation/appstorereceipts/responsebody/receipt
There is a field:
download_id (integer) : A unique identifier for the app download transaction.
And when im getting new receipt from apple this field is sometimes of type "LONG" - and not integer as documentation said. Please fix this.
And sometimes this field is null. (Again this is not mentioned in documentation)
What does it mean when field download_id is null?