Follow the instructions to Set Up a Promo Code For the Integration ID you will type in the what you have named the promo/discount on Square, it must be EXACTLY the same without spaces.

IMPORTANT: Percentage discounts (up to 100%) can be used with Square. You cannot, however, define a maximum amount to the discount. Square will apply the percentage discount to the entire ticket, without limit, regardless of what is defined in the Maximum Discount Amount field.

9/15/2022