All UPI links are currently for single use only, irrespective of the expiry date.

Even if the customer is able to make double payments (due the UPI app caching policy or other such issues), Setu will settle the first payment to the merchant and automatically refund all subsequent ones to the user. The refund TATs depend on the user's bank.

Note: This might change in future, and we will update our docs and FAQs accordingly.