---
title: "Staff: move an appointment (every segment of a visit) to another client, for example a relative who shares the phone number. Nothing is sent; the unsent reminder goes to the new client"
method: POST
path: "/api/v1/bookings/{reference}/change-client"
---

# Staff: move an appointment (every segment of a visit) to another client, for example a relative who shares the phone number. Nothing is sent; the unsent reminder goes to the new client

`POST /api/v1/bookings/{reference}/change-client`

## Request

- Base URL: `http://127.0.0.1:4310`
- URL: `http://127.0.0.1:4310/api/v1/bookings/{reference}/change-client`
- Auth: one of:
  - HTTP bearer
  - API key in cookie `sfb_session`

## Path parameters

- `reference` string, required

## Request body

- ChangeClientRequest
  - `client_id` string, required
  - `expected_version` integer

## Response `200`

OK

- object

## Other responses

- `400`: Validation error
- `401`: Unauthenticated
- `403`: Forbidden, tenant mismatch or policy
- `404`: Not found
- `409`: Slot unavailable, invalid state or idempotency conflict
- `422`: Consent, intake or prerequisite missing

---

[API](https://skmtc.dev/scalingfirm/apis/tsf-booking-api.md) · [All operations](https://skmtc.dev/scalingfirm/apis/tsf-booking-api/llms.txt) · [OpenAPI document](https://skmtc.dev/scalingfirm/apis/tsf-booking-api/revisions/81704199cd37?raw)