Coupon

Discount coupon for cart operations. Multiple coupons can be applied simultaneously, with merchant business rules determining stacking behavior, priorities, and conflicts.

Common Scenarios:

• Apply multiple discount codes (percentage + fixed amount)
• Stack loyalty discounts with promotional codes
• Remove specific coupons while keeping others
• Apply category-specific and store-wide discounts together

Business Rules: Merchants define stacking rules, maximum discounts, exclusions, and priority orders. Invalid combinations return validation issues with suggested resolutions.