OptionalintervalOptionalintervalOptionalintervalOptionalplanOptionalscheduleCustom installment schedule: 2-60 payments that differ in amount (per unit,
minor units) and in the gap before each one. Row 0 has no gap. Replaces
interval/intervalUnit/intervalCount/totalPayments/trialDays, which
must be omitted or agree with it. The line's unitPrice must equal row 0.
OptionalscheduleRead-only echo on responses: the sum of every row's per-unit amount. Ignored on input.
OptionaltotalOptionaltrial
Terms that make a cart line a subscription. One subscription is created per line when the checkout completes, with
quantityas seats; at most 10 per cart. Sendinterval, orintervalUnit+intervalCount(1 hour to 1 year).totalPayments(2-60) makes an installment plan;trialDays(0-365) a free trial, not combinable withtotalPayments. The line'sunitPriceis the per-period price per seat.