Add Prerequisites to Product Discount Functions

Discount functions now support prerequisites for product discount candidates, allowing you to define the "Buy X" portion of a Buy X, Get Y (BXGY) discount. In a BXGY discount, customers must purchase a specified quantity of one product (Buy X) to receive a discount on another product (Get Y).

What's New:

• A prerequisites field has been added to product discount candidates.
• Each prerequisite is defined as a cartLinePrerequisite, which includes:
  • id: The identifier for the cart line used as the prerequisite.
  • quantity: The number of items from that cart line required to qualify for the discount.

For more detailed information, please visit the Discount Functions documentation.