Chat Thread - Update Chat Message

Service:: Communication

API Version:: 2025-03-15

Updates a message.

PATCH {endpoint}/chat/threads/{chatThreadId}/messages/{chatMessageId}?api-version=2025-03-15

URI Parameters

Name	In	Required	Type	Description
chatMessageId	path	True	string	The message id.
chatThreadId	path	True	string	The thread id to which the message was sent.
endpoint	path	True	string	The endpoint of the Azure Communication resource.
api-version	query	True	string	Version of API to invoke.

Request Header

Media Types: "application/merge-patch+json"

Name	Required	Type	Description
Authorization	True	string	An ACS (Azure Communication Services) user access token.

Request Body

Media Types: "application/merge-patch+json"

Name	Type	Description
content	string	Chat message content.
metadata	object	Message metadata.

Responses

Name	Type	Description
204 No Content		Message is successfully updated.
401 Unauthorized	CommunicationErrorResponse	Unauthorized.
403 Forbidden	CommunicationErrorResponse	Forbidden.
429 Too Many Requests	CommunicationErrorResponse	Too many requests.
Other Status Codes	CommunicationErrorResponse	Service unavailable.

Security

Authorization

An ACS (Azure Communication Services) user access token.

Type: apiKey
In: header

Examples

Update message content

Sample request

HTTP

PATCH https://contoso.westus.communications.azure.com/chat/threads/34adfa4f-cedf-4dc0-ba29-b6d1a69ab345/messages/1591768249318?api-version=2025-03-15

{
  "content": "Updated message content",
  "metadata": {
    "someKey1": "someValue1",
    "someKey2": "someValue2"
  }
}

Sample response

Status code:: 204

Status code:: 401

{
  "error": {
    "code": "Unauthorized",
    "message": "Request is not authorized."
  }
}

Status code:: 403

{
  "error": {
    "code": "Forbidden",
    "message": "User is not allowed to perform specified action."
  }
}

Status code:: 429

{
  "error": {
    "code": "TooManyRequests",
    "message": "Rate limit exceeded."
  }
}

Status code:: 503

{
  "error": {
    "code": "ServiceUnavailable",
    "message": "The server is currently unable to handle the request."
  }
}

Definitions

UpdateChatMessageRequest

Object

Request payload for updating a chat message.

Name	Type	Description
content	string	Chat message content.
metadata	object	Message metadata.

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