Add Comment task.commentitem.add

curl -X POST \
        -H "Content-Type: application/json" \
        -H "Accept: application/json" \
        -d '{"TASKID":8017,"FIELDS":{"POST_MESSAGE":"Text of the new task comment","AUTHOR_ID":503,"POST_DATE":"2025-07-15T14:30:00+02:00","UF_FORUM_MESSAGE_DOC":["n4755","n4753"]},"auth":"**put_access_token_here**"}' \
        https://**put_your_bitrix24_address**/rest/task.commentitem.add
        

// 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 (the ID of the newly created comment)
        type CommentItemAddResult = number
        
        try {
          const response = await $b24.actions.v2.call.make<CommentItemAddResult>({
            method: 'task.commentitem.add',
            params: {
              TASKID: 8017,
              FIELDS: {
                POST_MESSAGE: 'Text of the new task comment',
                AUTHOR_ID: 503,
                POST_DATE: '2025-07-15T14:30:00+02:00',
                UF_FORUM_MESSAGE_DOC: ['n4755', 'n4753'],
              },
            },
            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('New comment ID:', 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 addTaskComment() {
            try {
              // Initialize the SDK inside a Bitrix24 frame
              const $b24 = await B24Js.initializeB24Frame()
        
              const response = await $b24.actions.v2.call.make({
                method: 'task.commentitem.add',
                params: {
                  TASKID: 8017,
                  FIELDS: {
                    POST_MESSAGE: 'Text of the new task comment',
                    AUTHOR_ID: 503,
                    POST_DATE: '2025-07-15T14:30:00+02:00',
                    UF_FORUM_MESSAGE_DOC: ['n4755', 'n4753'],
                  },
                },
                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('New comment ID:', result)
            } catch (error) {
              // Thrown on transport or SDK failures (AjaxError, SdkError, etc.)
              console.error(error)
            }
          }
        
          document.addEventListener('DOMContentLoaded', addTaskComment)
        </script>
        

try {
            $response = $b24Service
                ->core
                ->call(
                    'task.commentitem.add',
                    [
                        'TASKID' => 8017,
                        'FIELDS' => [
                            'POST_MESSAGE'         => 'Text of the new task comment',
                            'AUTHOR_ID'            => 503,
                            'POST_DATE'            => '2025-07-15T14:30:00+02:00',
                            'UF_FORUM_MESSAGE_DOC' => ['n4755', 'n4753'],
                        ],
                    ]
                );
        
            $result = $response
                ->getResponseData()
                ->getResult();
        
            echo 'Success: ' . print_r($result, true);
            // Your logic for processing data
            processData($result);
        
        } catch (Throwable $e) {
            error_log($e->getMessage());
            echo 'Error adding task comment: ' . $e->getMessage();
        }
        

BX24.callMethod(
            'task.commentitem.add',
            {
                "TASKID": 8017,
                "FIELDS": {
                    "POST_MESSAGE": "Text of the new task comment",
                    "AUTHOR_ID": 503,
                    "POST_DATE": "2025-07-15T14:30:00+02:00",
                    "UF_FORUM_MESSAGE_DOC": ["n4755", "n4753"]
                }
            },
            function(result){
                console.info(result.data());
                console.log(result);
            }
        );
        

require_once('crest.php');
        
        $result = CRest::call(
            'task.commentitem.add',
            [
                'TASKID' => 8017,
                'FIELDS' => [
                    'POST_MESSAGE' => 'Text of the new task comment',
                    'AUTHOR_ID' => 503,
                    'POST_DATE' => '2025-07-15T14:30:00+02:00',
                    'UF_FORUM_MESSAGE_DOC' => ['n4755', 'n4753']
                ]
            ]
        );
        
        echo '<PRE>';
        print_r($result);
        echo '</PRE>';