Steps for creating a stripe coupon:
In the Stripe Dashboard, open the Products page.
In the Create a coupon dialog, enter the coupon’s parameters.
Click "Create coupon"
Enter the details and create a new coupon.
Attached screenshot of a coupon we created for your reference. Please check.
Steps for Creating a PayPal Coupon:
Log in to your Braintree account.
Click on the subscription menu
Select the Add Ons/Discount tab
Click on the New discount button at bottom of the page
Create a new coupon by filling in the details.
Creating coupons on the Ventuno Platform:
Once the coupon is created on the Payment gateways, create coupons on the Ventuno platform using the coupon ID by following the steps here.