Update Task: task.item.update

If you are developing integrations for Bitrix24 using AI tools (Codex, Claude Code, Cursor), connect to the MCP server so that the assistant can utilize the official REST documentation.

Scope: task

Who can execute the method: any user

This method updates the data for a task. The following fields are available for updating. When updating task data, business logic and permissions are taken into account. For example, a Participant cannot rename a task—an error will be generated in such cases.

It is recommended to check whether the action is allowed before updating the data (task.item.isactionallowed).

DEPRECATED

The development of this method has been halted. Please use tasks.task.update.

Method Parameters

Name

Description

TASKID

Task identifier.

TASKDATA

List of fields with new values.

It is essential to maintain the order of parameters in the request. If this order is violated, the request will be executed with errors.

Code Examples

How to Use Examples in Documentation

curl -X POST \
        -H "Content-Type: application/json" \
        -H "Accept: application/json" \
        -d '{"taskId":1,"fields":{"TIME_ESTIMATE":113}}' \
        https://**put_your_bitrix24_address**/rest/**put_your_user_id_here**/**put_your_webhook_here**/task.item.update
        
curl -X POST \
        -H "Content-Type: application/json" \
        -H "Accept: application/json" \
        -d '{"taskId":1,"fields":{"TIME_ESTIMATE":113},"auth":"**put_access_token_here**"}' \
        https://**put_your_bitrix24_address**/rest/task.item.update
        
try
        {
            const response = await $b24.callMethod(
                'task.item.update',
                [1, {TIME_ESTIMATE: 113}]
            );
            
            const result = response.getData().result;
            console.info(result);
            console.log(result);
        }
        catch( error )
        {
            console.error('Error:', error);
        }
        
try {
            $response = $b24Service
                ->core
                ->call(
                    'task.item.update',
                    [
                        1,
                        ['TIME_ESTIMATE' => 113],
                    ]
                );
        
            $result = $response
                ->getResponseData()
                ->getResult();
        
            echo 'Success: ' . print_r($result, true);
            // Your required data processing logic
            processData($result);
        
        } catch (Throwable $e) {
            error_log($e->getMessage());
            echo 'Error updating task item: ' . $e->getMessage();
        }
        
BX24.callMethod(
            'task.item.update',
            [1, {TIME_ESTIMATE: 113}],
            function(result)
            {
                console.info(result.data());
                console.log(result);
            }
        );
        
require_once('crest.php');
        
        $result = CRest::call(
            'task.item.update',
            [
                'taskId' => 1,
                'fields' => [
                    'TIME_ESTIMATE' => 113
                ]
            ]
        );
        
        echo '<PRE>';
        print_r($result);
        echo '</PRE>';

Example of recording values with CRM.

curl -X POST \
        -H "Content-Type: application/json" \
        -H "Accept: application/json" \
        -d '{"taskId":1,"fields":{"UF_CRM_TASK":["L_4","C_7","CO_5","D_10"]}}' \
        https://**put_your_bitrix24_address**/rest/**put_your_user_id_here**/**put_your_webhook_here**/task.item.update
        
curl -X POST \
        -H "Content-Type: application/json" \
        -H "Accept: application/json" \
        -d '{"taskId":1,"fields":{"UF_CRM_TASK":["L_4","C_7","CO_5","D_10"]},"auth":"**put_access_token_here**"}' \
        https://**put_your_bitrix24_address**/rest/task.item.update
        
try
        {
            const response = await $b24.callMethod(
                'task.item.update',
                [1, {UF_CRM_TASK: ["L_4", "C_7", "CO_5", "D_10"]}]
            );
            
            const result = response.getData().result;
            console.info(result);
            console.log(result);
        }
        catch( error )
        {
            console.error('Error:', error);
        }
        
try {
            $response = $b24Service
                ->core
                ->call(
                    'task.item.update',
                    [
                        1,
                        ['UF_CRM_TASK' => ["L_4", "C_7", "CO_5", "D_10"]],
                    ]
                );
        
            $result = $response
                ->getResponseData()
                ->getResult();
        
            echo 'Success: ' . print_r($result, true);
            // Your required data processing logic
            processData($result);
        
        } catch (Throwable $e) {
            error_log($e->getMessage());
            echo 'Error updating task item: ' . $e->getMessage();
        }
        
BX24.callMethod(
            'task.item.update',
            [1, {UF_CRM_TASK: ["L_4", "C_7", "CO_5", "D_10"]}],
            function(result)
            {
                console.info(result.data());
                console.log(result);
            }
        );
        
require_once('crest.php');
        
        $result = CRest::call(
            'task.item.update',
            [
                'taskId' => 1,
                'fields' => [
                    'UF_CRM_TASK' => ["L_4", "C_7", "CO_5", "D_10"]
                ]
            ]
        );
        
        echo '<PRE>';
        print_r($result);
        echo '</PRE>';

The numbers represent the ID of the corresponding values. The value L_4 indicates a link to a lead task with ID = 4. Multiple links of the same type can be specified, for example, L_4, L_5. The following designations are available:

  • L — lead
  • C — contact
  • CO — company
  • D — deal
Previous
Get list of tasks
Next
Get task description