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Coupon codes promotion rules

The coupon codes promotion rule object and the allowed CRUD operations on the related resource endpoint
Commerce Layer provides a promotional engine built on top of two main resources: promotions and promotion rules.
Coupon code promotions rules are used to link a promotion to a specific coupon so that the promotion is triggered only based on the coupon code (if the coupon is not expired).
The number of promotions associated with a coupon code promotion rule is unlimited.