GuestCouponManagementInterface

What it does

This interface defines the API contract for managing discount coupons in guest shopping carts (carts for non-logged-in customers).

Developers use this to implement or call services that retrieve, apply, or remove coupon codes from guest carts through REST/SOAP APIs.

It's the guest-specific version of coupon management, requiring only a cart ID rather than customer authentication.

Public Methods

• get()
• set()
• remove()