Update Task tasks.task.update

curl -X POST \
        -H "Content-Type: application/json" \
        -H "Accept: application/json" \
        -d '{"taskId":11,"fields":{"UF_CRM_TASK":["L_4","C_7","CO_5","D_10"],"UF_TASK_WEBDAV_FILES":["n12345","n67890"],"RESPONSIBLE_ID":123},"auth":"**put_access_token_here**"}' \
        https://**put_your_bitrix24_address**/rest/tasks.task.update
        

// 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
        
        // Minimal shape of result.task; the API returns the full task object
        // Shape of the payload returned in result (match the "response handling" section of the page)
        type TaskUpdateResult = {
          task: { id: string }
        }
        
        try {
          const response = await $b24.actions.v2.call.make<TaskUpdateResult>({
            method: 'tasks.task.update',
            params: {
              taskId: 11, // ID of the task to update
              fields: {
                // Bind the task to several CRM entities via UF_CRM_TASK
                UF_CRM_TASK: ['L_4', 'C_7', 'CO_5', 'D_10'], // Lead 4 / Contact 7 / Company 5 / Deal 10
                // Attach several Drive files via UF_TASK_WEBDAV_FILES (prefix IDs with "n")
                UF_TASK_WEBDAV_FILES: ['n12345', 'n67890'],
                RESPONSIBLE_ID: 123 // New responsible person ID
              }
            },
            requestId: Text.getUuidRfc4122() // optional unique tracking id for this request
          })
        
          // 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(`Task ${result.task.id} updated`)
          }
        } 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 updateTask() {
            try {
              // Initialize the SDK inside a Bitrix24 frame
              const $b24 = await B24Js.initializeB24Frame()
        
              const response = await $b24.actions.v2.call.make({
                method: 'tasks.task.update',
                params: {
                  taskId: 11, // ID of the task to update
                  fields: {
                    // Bind the task to several CRM entities via UF_CRM_TASK
                    UF_CRM_TASK: ['L_4', 'C_7', 'CO_5', 'D_10'], // Lead 4 / Contact 7 / Company 5 / Deal 10
                    // Attach several Drive files via UF_TASK_WEBDAV_FILES (prefix IDs with "n")
                    UF_TASK_WEBDAV_FILES: ['n12345', 'n67890'],
                    RESPONSIBLE_ID: 123 // New responsible person ID
                  }
                },
                requestId: B24Js.Text.getUuidRfc4122() // optional unique tracking id for this request
              })
        
              // 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(`Task ${result.task.id} updated`)
            } catch (error) {
              // Thrown on transport or SDK failures (AjaxError, SdkError, etc.)
              console.error(error)
            }
          }
        
          document.addEventListener('DOMContentLoaded', updateTask)
        </script>
        

from b24pysdk.errors import BitrixAPIError, BitrixSDKException
        
        fields = {
            "UF_CRM_TASK": [
                "L_4",
                "C_7",
                "CO_5",
                "D_10",
            ],
            "UF_TASK_WEBDAV_FILES": [
                "n12345",
                "n67890",
            ],
            "RESPONSIBLE_ID": 123,
        }
        
        try:
            bitrix_response = client.tasks.task.update(
                task_id=11,
                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}")
        

try {
            $response = $b24Service
                ->core
                ->call(
                    'tasks.task.update',
                    [
                        'taskId' => 11, // Identifier of the task you want to update
                        'fields' => [
                            // Example of passing multiple values in the UF_CRM_TASK field
                            'UF_CRM_TASK' => [
                                'L_4', // Link to lead with id 4
                                'C_7', // Link to contact with id 7
                                'CO_5', // Link to company with id 5
                                'D_10' // Link to deal with id 10
                            ],
                            // Example of passing multiple files in the UF_TASK_WEBDAV_FILES field
                            'UF_TASK_WEBDAV_FILES' => [
                                'n12345', // Identifier of the first disk file
                                'n67890' // Identifier of the second disk file
                            ],
                            'RESPONSIBLE_ID' => 123 // Identifier of the new Participant
                        ]
                    ]
                );
        
            $result = $response
                ->getResponseData()
                ->getResult();
        
            echo 'Task successfully updated';
        
        } catch (Throwable $e) {
            error_log($e->getMessage());
            echo 'Error updating task: ' . $e->getMessage();
        }
        

 BX24.callMethod(
             "tasks.task.update",
             {
                 taskId: 11, // Identifier of the task you want to update
                 fields: {
                     // Example of passing multiple values in the UF_CRM_TASK field
                     UF_CRM_TASK: [
                         "L_4", // Link to lead with id 4
                         "C_7", // Link to contact with id 7
                         "CO_5", // Link to company with id 5
                         "D_10" // Link to deal with id 10
                     ],
                     // Example of passing multiple files in the UF_TASK_WEBDAV_FILES field
                     UF_TASK_WEBDAV_FILES: [
                         "n12345", // Identifier of the first disk file
                         "n67890" // Identifier of the second disk file
                     ],
                     RESPONSIBLE_ID: 123 // Identifier of the new Participant
                 }
             },
             function(result) {
                 if (result.error()) {
                     console.error(result.error());
                 } else {
                     console.info("Task successfully updated");
                 }
             }
         );
        

require_once('crest.php');
        
        $result = CRest::call(
            'tasks.task.update',
            [
                'taskId' => 11, // Identifier of the task you want to update
                'fields' => [
                    // Example of passing multiple values in the UF_CRM_TASK field
                    'UF_CRM_TASK' => [
                        'L_4', // Link to lead with id 4
                        'C_7', // Link to contact with id 7
                        'CO_5', // Link to company with id 5
                        'D_10' // Link to deal with id 10
                    ],
                    // Example of passing multiple files in the UF_TASK_WEBDAV_FILES field
                    'UF_TASK_WEBDAV_FILES' => [
                        'n12345', // Identifier of the first disk file
                        'n67890' // Identifier of the second disk file
                    ],
                    'RESPONSIBLE_ID' => 123 // Identifier of the new Participant
                ]
            ]
        );
        
        if (isset($result['error'])) {
            echo 'Error: ' . $result['error_description'];
        } else {
            echo 'Task successfully updated';
        }
        

// client and ctx are already created — see the Go SDK section
        res, err := client.Core().Call(ctx, "tasks.task.update", b24.Params{
        	"taskId": 11,
        	"fields": b24.Params{
        		"UF_CRM_TASK":          []string{"L_4", "C_7", "CO_5", "D_10"},
        		"UF_TASK_WEBDAV_FILES": []string{"n12345", "n67890"},
        		"RESPONSIBLE_ID":       123,
        	},
        })
        if err != nil {
        	return fmt.Errorf("tasks.task.update: %w", err)
        }
        
        // The method wraps the response in an object with the "task" key.
        raw, ok := b24.Unwrap(res.Result, "task")
        if !ok {
        	return fmt.Errorf("no task key in the response")
        }
        
        var item struct {
        	ID          b24.ID `json:"id"`
        	Title       string `json:"title"`
        	Description string `json:"description"`
        	Priority    string `json:"priority"`
        	Multitask   string `json:"multitask"`
        	NotViewed   string `json:"notViewed"`
        }
        if err := json.Unmarshal(raw, &item); err != nil {
        	return fmt.Errorf("parse response: %w", err)
        }
        fmt.Println(item.ID, item.Title)