Are coupons handled by Octobat Checkout?
Coupon are handled by Octobat checkout, they need to be created on the payment provider. Octobat Checkout automatically detects coupons created on your payment provider when your customer enters the coupon code. If you charge one time charges you will have to create coupons in the Octobat application as they are not supported by some payment provider, such as Stripe. You can create a coupon for one time charges under configurations → collect payments → coupons.