Hello!
I use PlayFabClientAPI.ValidateIOSReceipt in UnityIAP and it's work fine for first item's purchase. But after uninstalling game & trying to restore previously purchased item, I get error in ValidateIOSReceipt error callback:
{
"code": 400,
"status": "BadRequest",
"error": "ReceiptAlreadyUsed",
"errorCode": 1022,
"errorMessage": "iTunes validation result: 0 (Success) from https://sandbox.itunes.apple.com/verifyReceipt",
"CallBackTimeMS": 1256
}
So, should I validating the restoring items via Playfab or I should skip this step & unlock item immediately