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I mean our client sends a successfull purchase to our backend. I validate the receipt from the backend against apple and this transaction is not yet in the receipt. I store this transacion and when i check the receipt later again, the transaction is in the receipt and valid.Maybe this is some kind of outage, i see saw this behaviour for some hours and then weeks or months without. Normally it happend on the sandbox.

sometimes apple is too slow and the transaction is not yet in the receipt, so i have to store the failed transactions to re-validate them later. But sometimes i get these weired transactions and it's useless to revalidate them.I just look for some advice which format may be valid and which format i can drop instantly.