This varies depending on each partner. Some partners only allow users to purchase one voucher, while others allow multiple purchases.
To find out how many vouchers you can buy, refer to the deal’s Fine Print. Each deal will have a different Fine Print, so make sure you read it carefully before buying the voucher. It’s important to note that redemption happens all at once for all the deals you buy in a single transaction. If you want to redeem separately, or if you’re looking to purchase a large number of vouchers, you may do so in multiple transactions.