Used when the ShippingRate maps to an abstract Cart categorization expressed by strings (for example, Light, Medium, or Heavy).
Only keys defined in the values array can be used to create a tier or to set a value of the shippingRateInput on the Cart.
Keys must be unique.
Used when the ShippingRate maps to an abstract Cart categorization expressed by strings (for example,
Light,Medium, orHeavy). Only keys defined in thevaluesarray can be used to create a tier or to set a value of theshippingRateInputon the Cart. Keys must be unique.