Remove File Link from Task task.item.deletefile

curl -X POST \
        -H "Content-Type: application/json" \
        -H "Accept: application/json" \
        -d '{"TASK_ID":3,"ATTACHMENT_ID":28,"auth":"1iqeuq94vzfxu01bouws3voja2lsezfq"}' \
        https://your-domain.com/rest/task.item.deletefile
        

// 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 DeleteFileResult = boolean
        
        try {
          const response = await $b24.actions.v2.call.make<DeleteFileResult>({
            method: 'task.item.deletefile',
            params: {
              TASK_ID: 3,
              ATTACHMENT_ID: 28,
            },
            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('File unlinked from task:', 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 deleteFile() {
            try {
              // Initialize the SDK inside a Bitrix24 frame
              const $b24 = await B24Js.initializeB24Frame()
        
              const response = await $b24.actions.v2.call.make({
                method: 'task.item.deletefile',
                params: {
                  TASK_ID: 3,
                  ATTACHMENT_ID: 28,
                },
                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('File unlinked from task:', result)
            } catch (error) {
              // Thrown on transport or SDK failures (AjaxError, SdkError, etc.)
              console.error(error)
            }
          }
        
          document.addEventListener('DOMContentLoaded', deleteFile)
        </script>
        

try {
            $response = $b24Service
                ->core
                ->call(
                    'task.item.deletefile',
                    [
                        'TASK_ID'       => 3,
                        'ATTACHMENT_ID' => 28
                    ]
                );
        
            $result = $response
                ->getResponseData()
                ->getResult();
        
            if ($result->error()) {
                error_log($result->error());
            } else {
                echo 'Success: ' . print_r($result->data(), true);
            }
        
        } catch (Throwable $e) {
            error_log($e->getMessage());
            echo 'Error deleting file: ' . $e->getMessage();
        }
        

BX24.callMethod(
            'task.item.deletefile',
            {
                TASK_ID: 3,
                ATTACHMENT_ID: 28
            },
            function(result) {
                if(result.error())
                    console.error(result.error());
                else
                    console.log(result.data());
            }
        );
        

require_once('crest.php');
        
        $result = CRest::call(
            'task.item.deletefile',
            [
                'TASK_ID' => 3,
                'ATTACHMENT_ID' => 28
            ]
        );
        
        echo '<PRE>';
        print_r($result);
        echo '</PRE>';
        

// client and ctx are already created — see the Go SDK section
        res, err := client.Core().Call(ctx, "task.item.deletefile", b24.Params{
        	"TASK_ID":       3,
        	"ATTACHMENT_ID": 28,
        })
        if err != nil {
        	return fmt.Errorf("task.item.deletefile: %w", err)
        }
        
        // The response arrives as json.RawMessage — unmarshal it
        // into a struct matching the response shape shown below on this page.
        fmt.Printf("%s\n", res.Result)