---
title: "Update Conference"
method: POST
path: "/Accounts/{AccountSid}/Conferences/{Sid}"
tags: ["Conferences"]
---

# Update Conference

`POST /Accounts/{AccountSid}/Conferences/{Sid}`

Ends a voice conference or plays an announcement into the conference identified by SID. Use participant operations to mute, hold, coach, announce to, or remove one caller; Video Conference configuration uses the separate Video API.

#### Permissions

The API token used to authenticate must have the following scope(s) enabled to make a successful request: _Voice_.

[Learn more about API scopes](/docs/platform/your-signalwire-api-space).

## Path parameters

- `AccountSid` string, uuid, required — Universal Unique Identifier.
- `Sid` string, uuid, required — Universal Unique Identifier.

## Response `200`

The request has succeeded.

- ConferenceResponse — Response containing a single conference.
  - `sid` string, uuid, required — Universal Unique Identifier.
  - `account_sid` string, uuid, required — Universal Unique Identifier.
  - `date_created` string, required — The date, in RFC 2822 format, this conference was created.
  - `date_updated` string, required — The date, in RFC 2822 format, this conference was updated.
  - `friendly_name` string, required — A description, up to 64 characters, of the conference room.
  - `status` 'init' | 'in-progress' | 'completed', required — Conference status.
  - `api_version` string, required — The version of the SignalWire API.
  - `region` string, required — The region where this conference audio was mixed.
  - `uri` string, required — The URI for this conference.
  - `subresource_uris` ConferenceSubresourceUris, required — Conference subresource URIs.
    - `participants` string, required — Links to the participants.
    - `recordings` string, required — Links to the recordings.

## Other responses

- `400` — The request was invalid or cannot be processed. Check the error details for more information.
- `401` — Authentication failed. Please verify your credentials and try again.
- `404` — The requested resource was not found. Please verify the resource identifier.
- `422` — The request could not be processed due to validation errors. Check the error details for more information.
- `503` — The service is temporarily unavailable. Please try again later.

## Changes

- **2026-05-12** `2916d5e3072e` — 2 breaking, 2 info
  - the `account_sid` response's property type/format changed from `string`/`uuid` to ``/`` for status `200`
  - the `sid` response's property type/format changed from `string`/`uuid` to ``/`` for status `200`
  - added `#/components/schemas/uuid` to the `account_sid` response property `allOf` list for the response status `200`
  - added `#/components/schemas/uuid` to the `sid` response property `allOf` list for the response status `200`
- **2026-05-12** `5344c0c93a4c` — 1 breaking, 7 info
  - added 'unevaluatedProperties' constraint to the request body
  - added 'unevaluatedProperties' constraint to the response body for the status `200`
  - added 'unevaluatedProperties' constraint to the response body for the status `400`
  - added 'unevaluatedProperties' constraint to the response body for the status `401`
  - …4 more
- **2026-01-19** `d5fbaaddfa3e` — 3 breaking, 17 info
  - request property `Status` was restricted to a list of enum values
  - the `AnnounceUrl` request property type/format changed from `string`/`` to `string`/`uri`
  - the `region` response's property type/format changed from ``/`` to `string`/`` for status `200`
  - added the new `completed` enum value to the request property `Status`
  - …16 more
- **2026-01-15** `a10b019314cd` — 1 info
  - request body became optional
- …earlier changes not shown

[Full history](https://skmtc.dev/signalwire/apis/compatibility-api/changes/Accounts/:AccountSid/Conferences/:Sid/post.md)

---

[API](https://skmtc.dev/signalwire/apis/compatibility-api.md) · [All operations](https://skmtc.dev/signalwire/apis/compatibility-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/signalwire/compatibility-api/revisions/723316346320/schema)