DiscountMinimumRequirement union
The minimum subtotal or quantity requirements for the discount.
Possible types
[DiscountMinimumQuantity](https://shopify.dev/docs/admin-api/graphql/reference/discounts-and-marketing/discountminimumquantity)
[DiscountMinimumSubtotal](https://shopify.dev/docs/admin-api/graphql/reference/discounts-and-marketing/discountminimumsubtotal)