Exclude products and categories in coupons OpenCart

This add-on is useful if you need to exclude products from the entire list of products that will be subject to a discount from using the OpenCart coupon. For example, you need to exclude about 50 products out of 1000 available in the store. In the standard coupon functionality of OpenCart, you would have to manually enter 950 items in order for only those items to be discounted. Now you can simply exclude the desired products.

Attention, if you currently have coupons installed, their functionality will change (for example, if "iphone" was selected as the only product that is subject to a discount, then it will become an exception. The discount from the coupon will be applied to all products except "iphone").