If an Order is created from a Cart with a state other than `MatchesCart` or `ApplicationStoppedByGroupBestDeal`, a [DiscountCodeNonApplicable](ctp:api:type:DiscountCodeNonApplicableError) error is returned.
For Orders created from a Cart with a `ApplicationStoppedByGroupBestDeal` state, the discount code is not applied.
Indicates the state of a Discount Code in a Cart.