Add one or more lines to a cart
Adds one or more items to an existing cart and returns the updated cart with recalculated totals. For a timed ticket, this is the call that actually holds capacity — checking availability with GET /api/schedules/ticket reserves nothing on its own.
Headers
Identifies which store this request is for. Required on every store-scoped route. It is not authentication and not a secret — it grants no privileges and is safe to send from a browser. You receive the value once your Entria backend has been created and configured. Missing header returns 400; an unknown store returns 404.
Request
One or more lines to add. Every line needs a type (TICKET, ATTRACTION_PACKAGE, MEMBERSHIP, MEMBERSHIP_RENEW, VOUCHER, DONATION, or GENERIC) and a product sku; every type but MEMBERSHIP_RENEW also needs a quantity. TICKET lines send date and startTime together — both, or neither. Neither is only valid for a next-available product, where the slot is assigned automatically; if the product requires a schedule, one without the other is rejected and so is a schedule-requiring ticket sent with neither. ATTRACTION_PACKAGE lines follow the same rule: both date and startTime, or neither — neither is only valid when every component is next-available, and a package with a component that requires a chosen time is rejected when sent with neither. VOUCHER and DONATION lines need a price for the amount the shopper entered; MEMBERSHIP lines need an activationDate. MEMBERSHIP_RENEW lines need exactly one of the cardNumber of the membership being altered, or the membershipNumber of one of the member’s own memberships — with the member token, or with the OAuth client token plus the member’s email — and carry no quantity — one membership, one renewal. The sku must be one GET /api/membership/alterations (by card) or GET /api/member/alterations (by membershipNumber) offered for it; pass subscription to renew by recurring payment.