Send a Message in Task Chat tasks.task.chat.message.send
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Scope:
tasksWho can execute the method: any user with read access permission for the task or higher
This method belongs to REST 3.0. The call specifics and response format of the new API version are described in the REST 3.0 overview.
The method tasks.task.chat.message.send sends a new message to the task chat.
Method Parameters
Required parameters are marked with *
|
Name |
Description |
|
fields* |
An object with message parameters |
Parameter fields
Required parameters are marked with *
|
Name |
Description |
|
taskId* |
The identifier of the task to which the message should be sent. The task identifier can be obtained when creating a new task or through the old method of getting the task list |
|
text* |
The message text |
Code Examples
How to Use Examples in Documentation
The new API call differs by adding the /api/ segment to the request URL:
https://{address}/rest/api/{user_id}/{webhook_token}/tasks.task.chat.message.send
curl -X POST \
-H "Content-Type: application/json" \
-H "Accept: application/json" \
-d '{"fields":{"taskId":51,"text":"Message from external system"}}' \
https://**put_your_bitrix24_address**/rest/api/**put_your_user_id_here**/**put_your_webhook_here**/tasks.task.chat.message.send
curl -X POST \
-H "Content-Type: application/json" \
-H "Accept: application/json" \
-d '{"fields":{"taskId":51,"text":"Message from external system"},"auth":"**put_access_token_here**"}' \
https://**put_your_bitrix24_address**/rest/api/tasks.task.chat.message.send
// This snippet is an ES module: top-level await requires type="module" or a bundler.
// $b24 is an already-initialized SDK instance (see the SDK "Get started" guide).
import { Text } from '@bitrix24/b24jssdk'
import type { B24Frame } from '@bitrix24/b24jssdk'
declare const $b24: B24Frame
// Shape of the payload returned in result (match the "response handling" section of the page)
type SendMessageResult = {
result: boolean
}
try {
const response = await $b24.actions.v3.call.make<SendMessageResult>({
method: 'tasks.task.chat.message.send',
params: {
fields: {
taskId: 51,
text: 'Message from external system',
},
},
requestId: Text.getUuidRfc4122()
})
// The payload is available only on a successful response
if (!response.isSuccess) {
console.error(response.getErrorMessages().join('; '))
} else {
const result = response.getData()!.result
console.info('Message sent successfully:', result.result)
}
} catch (error) {
// Thrown on transport or SDK failures (AjaxError, SdkError, etc.)
console.error(error)
}
<!-- Load the SDK (UMD build); it is exposed as the global B24Js -->
<script src="https://unpkg.com/@bitrix24/b24jssdk@1/dist/umd/index.min.js"></script>
<script>
async function sendTaskChatMessage() {
try {
// Initialize the SDK inside a Bitrix24 frame
const $b24 = await B24Js.initializeB24Frame()
const response = await $b24.actions.v3.call.make({
method: 'tasks.task.chat.message.send',
params: {
fields: {
taskId: 51,
text: 'Message from external system',
},
},
requestId: B24Js.Text.getUuidRfc4122()
})
// The payload is available only on a successful response
if (!response.isSuccess) {
console.error(response.getErrorMessages().join('; '))
return
}
const result = response.getData().result
console.info('Message sent successfully:', result.result)
} catch (error) {
// Thrown on transport or SDK failures (AjaxError, SdkError, etc.)
console.error(error)
}
}
document.addEventListener('DOMContentLoaded', sendTaskChatMessage)
</script>
from b24pysdk.errors import BitrixAPIError, BitrixSDKException
fields = {
"taskId": 51,
"text": "Message from an external system",
}
try:
bitrix_response = client.tasks.task.chat.message.send(
fields=fields,
).response
result = bitrix_response.result
print(result)
except BitrixAPIError as error:
print(
"Bitrix API error",
f"error: {error.error}",
f"error_description: {error.error_description}",
sep="\n",
)
except BitrixSDKException as error:
print(f"Bitrix SDK error: {error.message}")
except Exception as error:
print(f"Unexpected error: {error}")
SDKs do not yet support the /rest/api/ address in calls. Use direct HTTP requests, for example, via curl or fetch.
try {
$response = $b24Service
->core
->call(
'tasks.task.chat.message.send',
[
'fields' =>
[
'taskId' => 51,
'text' => 'Message from external system'
]
]
);
$result = $response
->getResponseData()
->getResult();
echo 'Success: ' . print_r($result, true);
processData($result);
} catch (Throwable $e) {
error_log($e->getMessage());
echo 'Error sending chat message: ' . $e->getMessage();
}
SDKs do not yet support the /rest/api/ address in calls. Use direct HTTP requests, for example, via curl or fetch.
BX24.callMethod(
'tasks.task.chat.message.send',
{
'fields': {
'taskId': 51,
'text': 'Message from external system'
}
},
function(result){
console.info(result.data());
console.log(result);
}
);
SDKs do not yet support the /rest/api/ address in calls. Use direct HTTP requests, for example, via curl or fetch.
require_once('crest.php');
$result = CRest::call(
'tasks.task.chat.message.send',
[
'fields' =>
[
'taskId' => 51,
'text' => 'Message from external system'
]
]
);
echo '<PRE>';
print_r($result);
echo '</PRE>';
// client and ctx are already created — see the Go SDK section
res, err := client.Core().Call(ctx, "tasks.task.chat.message.send", b24.Params{
"fields": b24.Params{
"taskId": 51,
"text": "Message from external system",
},
})
if err != nil {
return fmt.Errorf("tasks.task.chat.message.send: %w", err)
}
var item struct {
Result bool `json:"result"`
}
if err := json.Unmarshal(res.Result, &item); err != nil {
return fmt.Errorf("parse response: %w", err)
}
fmt.Println(item.Result)
Response Handling
HTTP Status: 200
{
"result": {
"result": true
},
"time": {
"start": 1762257254,
"finish": 1762257254.211513,
"duration": 0.21151304244995117,
"processing": 0,
"date_start": "2025-11-04T15:54:14+01:00",
"date_finish": "2025-11-04T15:54:14+01:00",
"operating": 0
}
}
Returned Data
|
Name |
Description |
|
result |
The root element of the response. Contains an object with the key |
|
time |
Information about the execution time of the request |
Error Handling
HTTP Status: 400
{
"error": {
"code": "BITRIX_REST_V3_EXCEPTION_VALIDATION_DTOVALIDATIONEXCEPTION",
"message": "Error during object validation",
"validation": [
{
"message": "The required field \u0022taskId\u0022 is not filled",
"field": "taskId"
}
]
}
}
|
Name |
Description |
|
error.code |
String error code. Use it to identify the type of exception |
|
error.message |
Text description of the error |
|
error.validation |
Array with error details. Present only in data validation errors |
|
error.validation[].field |
Name of the field where the validation error occurred |
|
error.validation[].message |
Description of the error related to the specified field |
Possible Error Codes
Request Validation Errors
Error Code: BITRIX_REST_V3_EXCEPTION_VALIDATION_REQUESTVALIDATIONEXCEPTION
|
Field |
Error Description |
How to Fix |
|
|
The required field |
Add the specified field to the request body |
|
|
The field |
Ensure the value passed is of the correct type |
Access Denied Error
Error Code: BITRIX_REST_V3_EXCEPTION_ACCESSDENIEDEXCEPTION
|
Field |
Error Description |
How to Fix |
|
|
Access denied |
No access to the task |
Statuses and System Error Codes
HTTP Status: 4xx, 5xx
The errors described below are returned by the REST API itself, not by the logic of a specific method. They can arrive in response to any method.
|
Status |
Code |
Description |
|
|
|
An internal server error has occurred. Retry the call, and if the error persists, contact the server administrator or Bitrix24 technical support |
|
|
|
The server returned an unexpected response. Retry the call, and if the error persists, contact the server administrator or Bitrix24 technical support |
|
|
|
The request intensity limit has been exceeded |
|
|
|
The method is blocked because the request resource intensity limit has been exceeded. The block is lifted automatically once the accumulated execution time of the method no longer exceeds the limit |
|
|
|
The request contains no authorization data: neither an access token nor a webhook code was passed |
|
|
|
Methods are called over the HTTPS protocol only |
|
|
|
The REST API is blocked due to overload. This is a manual individual block. To have it lifted, contact Bitrix24 technical support |
|
|
|
REST API access is not active for this account. In Bitrix24 Cloud, check the current plan or trial status: Vibe+ plans include REST API access, while Essentials plans do not. A webhook receives a different error message — |
|
|
|
No active webhook with the specified user identifier and secret code was found |
|
|
|
No method with this name was found. The name is misspelled, the method does not exist in the REST API, or it is unavailable without the required scope |
|
|
|
The request requires broader permissions than the token has: for a webhook these are the permissions granted to it, for an application it is the scope. For an application, the error message ends with |
|
|
|
The access token has expired |
|
|
|
The application is installed, but the Bitrix24 administrator has granted access to it only to specific users |
|
|
|
The public part of the site is closed. To open it on an on-premise installation, disable the "Temporary closure of the public part of the site" option. Path to the setting: Desktop > Settings > Product Settings > Module Settings > Main Module > Temporary closure of the public part of the site |