Delegate a workflow task bizproc.task.delegate

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Scope: bizproc

Who can execute the method: any user responsible for the workflow task

This method delegates a workflow task. You can only delegate your own task.

User documentation

Actions: Tasks

Method parameters

Required parameters are marked with *

Name `type`	Description
TASK_IDS* `array`	List of task identifiers. You can obtain identifiers using the bizproc.task.list method.
FROM_USER_ID* `integer`	Identifier of the user from whom the tasks will be delegated. You can obtain the user identifier using the user.get method.
TO_USER_ID* `integer`	Identifier of the user to whom the tasks will be delegated. You can obtain the user identifier using the user.get method. Who you can delegate to depends on the task settings: only subordinates, all employees, or no one.

Code examples

How to Use Examples in Documentation

cURL (Webhook)

cURL (OAuth)

Python

PHP

BX24.js

PHP CRest

curl -X POST \
        -H "Content-Type: application/json" \
        -H "Accept: application/json" \
        -d '{"TASK_IDS":[1128,1129,1130],"FROM_USER_ID":15,"TO_USER_ID":37}' \
        https://**put_your_bitrix24_address**/rest/**put_your_user_id_here**/**put_your_webhook_here**/bizproc.task.delegate

curl -X POST \
        -H "Content-Type: application/json" \
        -H "Accept: application/json" \
        -d '{"TASK_IDS":[1128,1129,1130],"FROM_USER_ID":15,"TO_USER_ID":37,"auth":"**put_access_token_here**"}' \
        https://**put_your_bitrix24_address**/rest/bizproc.task.delegate

try
        {
            const response = await $b24.callMethod(
                'bizproc.task.delegate',
                {
                    TASK_IDS: [1128, 1129, 1130],
                    FROM_USER_ID: 15,
                    TO_USER_ID: 37,
                }
            );
            
            const result = response.getData().result;
            console.log('Delegated tasks:', result);
        }
        catch( error )
        {
            console.error('Error:', error);
        }

from b24pysdk.errors import BitrixAPIError, BitrixSDKException
        
        try:
            bitrix_response = client.bizproc.task.delegate(
                task_ids=[
                    1128,
                    1129,
                    1130,
                ],
                from_user_id=15,
                to_user_id=37,
            ).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}")

try {
            $response = $b24Service
                ->core
                ->call(
                    'bizproc.task.delegate',
                    [
                        'TASK_IDS' => [1128, 1129, 1130],
                        'FROM_USER_ID' => 15,
                        'TO_USER_ID' => 37,
                    ]
                );
        
            $result = $response
                ->getResponseData()
                ->getResult();
        
            echo 'Success: ' . print_r($result, true);
        
        } catch (Throwable $e) {
            error_log($e->getMessage());
            echo 'Error delegating task: ' . $e->getMessage();
        }

BX24.callMethod(
            'bizproc.task.delegate',
            {
                'TASK_IDS': [1128, 1129, 1130],
                'FROM_USER_ID': 15,
                'TO_USER_ID': 37,
            },
            function(result)
            {
                if(result.error())
                    alert("Error: " + result.error());
                else
                    console.log(result.data());
            }
        );

require_once('crest.php');
        
        $result = CRest::call(
            'bizproc.task.delegate',
            [
                'TASK_IDS' => [1128, 1129, 1130],
                'FROM_USER_ID' => 15,
                'TO_USER_ID' => 37
            ]
        );
        
        echo '<PRE>';
        print_r($result);
        echo '</PRE>';

// client and ctx are already created — see the Go SDK section
        res, err := client.Core().Call(ctx, "bizproc.task.delegate", b24.Params{
        	"TASK_IDS":     []int{1128, 1129, 1130},
        	"FROM_USER_ID": 15,
        	"TO_USER_ID":   37,
        })
        if err != nil {
        	return fmt.Errorf("bizproc.task.delegate: %w", err)
        }
        
        var ok bool
        if err := json.Unmarshal(res.Result, &ok); err != nil {
        	return fmt.Errorf("parse response: %w", err)
        }
        fmt.Println("done:", ok)

Response handling

HTTP status: 200

{
            "result": true,
            "time": {
                "start": 1748526089.625516,
                "finish": 1748526089.656787,
                "duration": 0.03127098083496094,
                "processing": 0.008746147155761719,
                "date_start": "2025-05-29T16:41:29+02:00",
                "date_finish": "2025-05-29T16:41:29+02:00",
                "operating_reset_at": 1748526689,
                "operating": 0
            }
        }

Returned data

Name `type`	Description
result `boolean`	Returns `true` if the task was successfully delegated.
time `time`	Information about the request execution time.

Error handling

HTTP status: 400

{
            "error": "ERROR_INVALID_USER_ID",
            "error_description": "Invalid FROM_USER_ID"
        }

Name `type`	Description
error `string`	String error code. It consists of digits, Latin letters, and underscores. It may arrive empty — in that case only `error_description` shows the reason
error_description `string`	Error message for the developer. Do not show it to the end user without processing

Possible error codes

Code	Error message	Description
`ERROR_TASK_VALIDATION`	Invalid TASK_IDS	Invalid task identifiers or the `TASK_IDS` parameter was not provided.
`ERROR_INVALID_USER_ID`	Invalid FROM_USER_ID	Invalid or missing user identifier from whom the delegation is made.
`ERROR_INVALID_USER_ID`	Invalid TO_USER_ID	Invalid or missing user identifier to whom the delegation is made.
`ERROR_DELEGATION_NOT_ALLOWED`	User is not responsible for the task	The user specified in the `FROM_USER_ID` parameter is not responsible for the task.
`ERROR_DELEGATION_NOT_ALLOWED`	Task delegation is only available for intranet users	The user specified in the `TO_USER_ID` parameter is not an intranet user.
`ERROR_DELEGATION_NOT_ALLOWED`	List of errors separated by `;`	The method can accept multiple tasks. If errors occur in multiple tasks, they will be returned as a list separated by `;`.

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 Error Message	Description
`500`	`INTERNAL_SERVER_ERROR` Internal server error	An internal server error has occurred. Retry the call, and if the error persists, contact the server administrator or Bitrix24 technical support
`500`	`ERROR_UNEXPECTED_ANSWER` Server returned an unexpected response	The server returned an unexpected response. Retry the call, and if the error persists, contact the server administrator or Bitrix24 technical support
`503`	`QUERY_LIMIT_EXCEEDED` Too many requests	The request intensity limit has been exceeded
`429`	`OPERATION_TIME_LIMIT` Method is blocked due to operation time limit	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
`401`	`NO_AUTH_FOUND` Wrong authorization data	The request contains no authorization data: neither an access token nor a webhook code was passed
`401`	`INVALID_REQUEST` Https required	Methods are called over the HTTPS protocol only
`401`	`OVERLOAD_LIMIT` REST API is blocked due to overload	The REST API is blocked due to overload. This is a manual individual block. To have it lifted, contact Bitrix24 technical support
`401`	`ACCESS_DENIED` REST is available only on commercial plans	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 — `REST is available only by subscription`
`401`	`INVALID_CREDENTIALS` Invalid request credentials	No active webhook with the specified user identifier and secret code was found
`404`	`ERROR_METHOD_NOT_FOUND` Method not 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
`401`	`insufficient_scope` The request requires higher privileges than provided by the webhook token	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 `provided by the access token`
`401`	`expired_token` The access token provided has expired	The access token has expired
`401`	`user_access_error` The user does not have access to the application	The application is installed, but the Bitrix24 administrator has granted access to it only to specific users
`403`	`PORTAL_DELETED` Portal was deleted	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

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Complete Workflow Task

Overview of Methods

Delegate a workflow task bizproc.task.delegate

Method parametersMethod parameters

Code examplesCode examples

Response handlingResponse handling

Returned dataReturned data

Error handlingError handling

Possible error codesPossible error codes

Statuses and System Error CodesStatuses and System Error Codes

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