Sometime i got strange transactionId reported from the ios client.
Normally they are 15 digits like:
400000123456789
but sometimes i got 40 character uuid, example:
FAB60FFD-906D-48CB-8FED-092C4B2707D6
In that case the receipt does not contain any transactions (in_app list in the response when verifiying against apple is empty).
What does this mean? Is someone trying to hack or some strange fallback mechanism? Are there valid transactiondIds in this format?
I get similar String in response Header of verifyReceipt in the following header: x-apple-request-uuid
