Ready2order Discount Group API
Discount groups organise discounts into named collections. Every discount must belong to a group, so you need at least one group before you can create discounts. Setting `discountGroup_active` to `false` hides all discounts in the group at the POS, which is useful for seasonal or temporarily suspended promotions. A group cannot be deleted while it still contains discounts. [Delete](#operation/discountDelete) or move the discounts out of the group first.