The discounts applied to the subscription item. Subscription item discounts are applied before subscription discounts. Use expand[]=discounts to expand each discount.
Set of key-value pairs that you can attach to an item. Metadata on this item will update the underlying subscription item's metadata when the phase is entered.
ID of the plan to which the customer should be subscribed.
ID of the price to which the customer should be subscribed.
OptionalquantityQuantity of the plan to which the customer should be subscribed.
Optionaltax_The tax rates which apply to this phase_item. When set, the default_tax_rates on the phase do not apply to this phase_item.
Define thresholds at which an invoice will be sent, and the related subscription advanced to a new billing period