The following fields allow you to configure coupon options per product:
Require Coupons – Check this box if you would like to require a coupon or access code in order for the user to checkout and purchase the product. Inventory Management on the Cart page must also be enabled to enforce the Coupon to be required.
Exclude Coupons – Check the exclude coupons checkbox if you wish to exclude this product from being discounted when the user enters a valid coupon code during checkout. This enables you to choose which products are discounted when you have an active coupon enabled in your cart.