You may set up up to 4 different Promotion Coupons. For each Coupon provide Coupon code, Amount and Minimum Order Amount. After a Coupon is deleted from the Database, the Cart will display a "Invalid or Expired Coupon" message.
The Promo Code is the code that customers will use.
Promo Amount is the Discount Amount that will be applied.
Minimum Order for Discount is the minimum Order amount under (as Sub total, before Taxes and Shipping charges) that the script will accept the coupon for.