---
title: "Changes to Update a Participant"
method: POST
path: "/Accounts/{AccountSid}/Conferences/{ConferenceSid}/Participants/{CallSid}"
---

# Changes to Update a Participant

`POST /Accounts/{AccountSid}/Conferences/{ConferenceSid}/Participants/{CallSid}`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 8 of 40 revisions.

- **2026-05-12** `2916d5e3072e` — 5 breaking, 6 info
- **2026-05-12** `5344c0c93a4c` — 1 breaking, 5 info
- **2026-03-04** `2e516ba2383f` — 1 breaking
- **2026-01-19** `d5fbaaddfa3e` — 3 breaking, 1 warning, 18 info
- **2026-01-15** `07f73f74a61d` — 1 breaking, 1 info
- **2026-01-15** `6b2611cfa74b` — 1 breaking
- **2026-01-15** `686ef84c2abc` — 1 breaking, 1 info
- **2026-01-15** `3c88f14db21e` — 5 breaking, 6 info

## Changes

- **2026-05-12** `2916d5e3072e` — 5 breaking, 6 info
  - added `#/components/schemas/uuid` to the `CallSidToCoach` request property `allOf` list
  - the `account_sid` response's property type changed from `string` to no type, and format from `uuid` to no format for status `200`
  - the `call_sid` response's property type changed from `string` to no type, and format from `uuid` to no format for status `200`
  - the `call_sid_to_coach` response's property format changed from `uuid` to no format for status `200`
  - the `conference_sid` response's property type changed from `string` to no type, and format from `uuid` to no format for status `200`
  - the `CallSidToCoach` request property type was generalized from `string` to no type, and format from `uuid` to no format
  - added `#/components/schemas/uuid` to the `account_sid` response property `allOf` list for the response status `200`
  - added `#/components/schemas/uuid` to the `call_sid` response property `allOf` list for the response status `200`
  - added `#/components/schemas/uuid` to the `conference_sid` response property `allOf` list for the response status `200`
  - added `#/components/schemas/uuid` to the `call_sid_to_coach` response property `anyOf` list for the response status `200`
  - removed `subschema #1` from the `call_sid_to_coach` response property `anyOf` list for the response status `200`
- **2026-05-12** `5344c0c93a4c` — 1 breaking, 5 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`
  - added 'unevaluatedProperties' constraint to the response body for the status `404`
  - added 'unevaluatedProperties' constraint to the response body for the status `422`
- **2026-03-04** `2e516ba2383f` — 1 breaking
  - response property `call_sid_to_coach` list-of-types was widened by adding types `null` to media type `application/json` of response `200`
- **2026-01-19** `d5fbaaddfa3e` — 3 breaking, 1 warning, 18 info
  - the `AnnounceUrl` request property format changed from no format to `uri`
  - the `HoldUrl` request property format changed from no format to `uri`
  - the response property `call_sid_to_coach` became nullable for the status `200`
  - removed the request property `Beep`
  - added the new optional request property `WaitMethod`
  - added the new optional request property `WaitUrl`
  - the `HoldMethod` request property default value changed from `POST` to `GET`
  - added the non-success response with the status `400`
  - added the non-success response with the status `422`
  - the response property `account_sid` became required for the status `200`
  - the response property `call_sid` became required for the status `200`
  - the response property `call_sid_to_coach` became required for the status `200`
  - the response property `coaching` became required for the status `200`
  - the response property `conference_sid` became required for the status `200`
  - the response property `date_created` became required for the status `200`
  - the response property `date_updated` became required for the status `200`
  - the response property `end_conference_on_exit` became required for the status `200`
  - the response property `hold` became required for the status `200`
  - the response property `muted` became required for the status `200`
  - the response property `start_conference_on_enter` became required for the status `200`
  - the response property `status` became required for the status `200`
  - the response property `uri` became required for the status `200`
- **2026-01-15** `07f73f74a61d` — 1 breaking, 1 info
  - removed the media type `application/json` from the request body
  - added the media type `application/x-www-form-urlencoded` to the request body
- **2026-01-15** `6b2611cfa74b` — 1 breaking
  - the request property `CallSidToCoach` became not nullable
- **2026-01-15** `686ef84c2abc` — 1 breaking, 1 info
  - the response property `call_sid_to_coach` became nullable for the status `200`
  - the request property `CallSidToCoach` became nullable
- **2026-01-15** `3c88f14db21e` — 5 breaking, 6 info
  - added the new path request parameter `AccountSid`
  - added the new path request parameter `CallSid`
  - added the new path request parameter `ConferenceSid`
  - removed the media type `application/x-www-form-urlencoded` from the request body
  - the `status` response's property type changed from `string` to no type for status `200`
  - added the media type `application/json` to the request body
  - added the non-success response with the status `401`
  - added the non-success response with the status `404`
  - added `#/components/schemas/ParticipantStatus` to the `status` response property `allOf` list for the response status `200`
  - removed the `completed` enum value from the `status` response property for the response status `200`
  - removed the `in-progress` enum value from the `status` response property for the response status `200`

---

[Operation](https://skmtc.dev/signalwire/apis/compatibility-api/docs/Accounts/:AccountSid/Conferences/:ConferenceSid/Participants/:CallSid/post.md) · [API](https://skmtc.dev/signalwire/apis/compatibility-api.md) · [Page](https://skmtc.dev/signalwire/apis/compatibility-api/changes/Accounts/:AccountSid/Conferences/:ConferenceSid/Participants/:CallSid/post)