Status of the receipt verification. *
VALID: The purchase was valid. *
VALID_NOT_REDEEMED: The purchase was valid but seen before, and had not yet been redeemed. *
INVALID_ALREADY_REDEEMED: The purchase has already been redeemed. *
INVALID_VERIFICATION_FAILED: The receipt verification Service returned that the receipt data was not valid. *
INVALID_ANOTHER_PLAYER: The receipt has previously been used by a different player and validated. *
INVALID_CONFIGURATION: The service configuration is invalid, further information in the details section of the response. *
INVALID_PRODUCT_ID_MISMATCH: The purchase configuration store product identifier does not match the one in the receipt.