At checkout valid codes are applied to the order and show your chosen description.
Discount codes - Overview
You can create discount codes to share with your customers. These are applied at checkout and can include percentage discounts (e.g. 10% off), fixed value discounts (e.g. £10 off) and free shipping. Discount codes are created using a series of rules, which allow you to offer discounts based on set parameters. You can choose to offer a code which is valid only for a specific shipping country, or based on the order total for example. Codes can be set to automatically start and expire on dates of your choosing.Expired, invalid or non-existent codes show an error message.