Cancel reservation room
const url = 'https://api.aerandil.com/v1/actions/hospitality.action.cancel_reservation_room/apply';const options = { method: 'POST', headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'}, body: '{"branch":"2489E9AD-2EE2-8E00-8EC9-32D5F69181C0","params":{"business_date":"2026-04-15","cancelled_at":"2026-04-15T12:00:00Z","outlet_id":"2489E9AD-2EE2-8E00-8EC9-32D5F69181C0","reason":"example"},"return_modified":false,"target":{"id":"2489E9AD-2EE2-8E00-8EC9-32D5F69181C0","object_type":"hospitality.reservation_room"}}'};
try { const response = await fetch(url, options); const data = await response.json(); console.log(data);} catch (error) { console.error(error);}curl --request POST \ --url https://api.aerandil.com/v1/actions/hospitality.action.cancel_reservation_room/apply \ --header 'Authorization: Bearer <token>' \ --header 'Content-Type: application/json' \ --data '{ "branch": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0", "params": { "business_date": "2026-04-15", "cancelled_at": "2026-04-15T12:00:00Z", "outlet_id": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0", "reason": "example" }, "return_modified": false, "target": { "id": "2489E9AD-2EE2-8E00-8EC9-32D5F69181C0", "object_type": "hospitality.reservation_room" } }'Cancel one room of a multi-room reservation before arrival. The room goes the way a cancelled booking’s rooms go (the same leg cascade cancel_reservation runs): status cancelled, its room-nights released to the availability ledger (share-aware), its room assignment cleared. The booking stands with the rest: its guest counts re-derive from the live rooms, it reads modified, an unpaid deposit re-derives, and the other rooms and every folio are untouched. Penalty, per room: the booking’s frozen cancellation terms are split by this room’s share of the booking’s room revenue — the room records its part of the fee in force at cancelled_at, and the booking keeps the rest of every frozen figure — so the policy is never walked again and the two parts always sum to what was frozen. With outlet_id, a non-zero part posts to the booking’s own account as a cancellation fee. Refuses the last live room (cancel the reservation), a room in house or checked out, and a booking already in house, cancelled or no-show. Replay-iff-identical on cancelled_at. Emits reservation_room.cancelled.decided. Guest-impacting and destructive, so agents stage it for human confirmation.
Effects: modify hospitality.reservation_room; modify hospitality.reservation; modify hospitality.availability_day; unlink hospitality.link.reservation_room_assigned_to; link hospitality.link.reservation_for_room_type; unlink hospitality.link.reservation_for_room_type; create hospitality.charge; link hospitality.link.charge_at_outlet; create hospitality.tax_application; link hospitality.link.charge_has_tax_application; create hospitality.folio; link hospitality.link.reservation_has_folio; link hospitality.link.folio_has_charge; modify hospitality.folio; modify hospitality.payment_request.
Authorizations
Section titled “Authorizations”Request Bodyrequired
Section titled “Request Bodyrequired”object
Apply against an open branch’s overlay view instead of the canonical (main) plane. The action’s writes land in the branch’s copy-on-first-write overlay, its events in the branch’s own stream, and the invocation is journaled for merge-by-replay. Branch writes are action-only, so this is the write-side entry point to a branch (POST /v1/branches forks one).
object
When true, the response carries modified_objects and modified_links projections — the engine reads the event log inside the same transaction so the projection observes the handler’s own writes.
object
Responses
Section titled “Responses”Action applied. modified_objects and modified_links populated when return_modified: true was supplied.
Envelope returned by the Aerandil action engine. correlation_id ties every event emitted by this invocation; modified_objects and modified_links project the events the handler emitted (per the action’s declared effects); warnings carries any non-blocking soft-validator observations.
object
Per-invocation correlation id; matches events.correlation_id for every event this action appended.
Links established or removed by this invocation. Empty when the caller did not request return_modified.
object
Objects created, modified, or soft-deleted by this invocation. Empty when the caller did not request return_modified.
object
Non-blocking soft-validator observations emitted during this invocation (e.g. comp-authority over-limit, recipe pour-cost over sell-price). Absent when no warnings were emitted.
object
Human-readable summary, suitable for logging or operator-UI surfacing.
Object type the warning was raised against.
Property the warning anchors to, when a single field is the locus. Absent for multi-field rules.
Stable kebab-case rule identifier (e.g. comp-authority-over-limit).
Example
{ "modified_links": [ { "kind": "unlinked", "link_type": "hospitality.link.reservation_room_assigned_to" } ], "modified_objects": [ { "kind": "modified", "object_type": "hospitality.reservation_room" } ]}Conflict — concurrent modification or unique constraint violation.
Validation error — parameter validation or business-rule violation.