What is an important step when handling coupon application within the cart functionality?

When managing coupon application within the cart functionality, validating user authorization before applying a coupon is essential. This step ensures that only eligible users can access and utilize the coupon codes. For example, certain coupons may be restricted to specific customer segments, such as new customers or loyalty program members. By validating user authorization, you prevent misuse of promotions and ensure that your marketing strategies are effective and targeted.

While there may be other considerations, such as ensuring proper syntax and testing functionality, these do not hold the same level of importance as user verification. Validating authorization is a crucial aspect of maintaining the integrity of your promotional campaigns and customer relationships. In this way, it directly enhances user experience and prevents fraudulent activities, which could otherwise lead to revenue loss for the business.