Set the "unread" flag for messages im.dialog.unread

curl -X POST \
          -H "Content-Type: application/json" \
          -H "Accept: application/json" \
          -d '{"DIALOG_ID":"chat1489","MESSAGE_ID":84869,"auth":"**put_access_token_here**"}' \
          https://**put_your_bitrix24_address**/rest/im.dialog.unread
        

// 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
        
        try {
          const response = await $b24.actions.v2.call.make<boolean>({
            method: 'im.dialog.unread',
            params: {
              DIALOG_ID: 'chat1489',
              MESSAGE_ID: 84869,
            },
            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('Unread flag set:', 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 setDialogUnread() {
            try {
              // Initialize the SDK inside a Bitrix24 frame
              const $b24 = await B24Js.initializeB24Frame()
        
              const response = await $b24.actions.v2.call.make({
                method: 'im.dialog.unread',
                params: {
                  DIALOG_ID: 'chat1489',
                  MESSAGE_ID: 84869,
                },
                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('Unread flag set:', result)
            } catch (error) {
              // Thrown on transport or SDK failures (AjaxError, SdkError, etc.)
              console.error(error)
            }
          }
        
          document.addEventListener('DOMContentLoaded', setDialogUnread)
        </script>
        

from b24pysdk.errors import BitrixAPIError, BitrixSDKException
        
        try:
            bitrix_response = client.im.dialog.unread(
                dialog_id="chat1489",
                message_id=84869,
            ).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(
                'im.dialog.unread',
                [
                    'DIALOG_ID' => 'chat1489',
                    'MESSAGE_ID' => 84869,
                ]
            );
        
            $result = $response->getResponseData()->getResult();
            print_r($result);
        } catch (Throwable $e) {
            error_log($e->getMessage());
        }
        

BX24.callMethod(
            'im.dialog.unread',
            {
                DIALOG_ID: 'chat1489',
                MESSAGE_ID: 84869
            },
            function(result)
            {
                if (result.error())
                {
                    console.error(result.error());
                }
                else
                {
                    console.log(result.data());
                }
            }
        );
        

require_once('crest.php');
        
        $result = CRest::call(
            'im.dialog.unread',
            [
                'DIALOG_ID' => 'chat1489',
                'MESSAGE_ID' => 84869,
            ]
        );
        
        print_r($result);
        

// client and ctx are already created — see the Go SDK section
        res, err := client.Core().Call(ctx, "im.dialog.unread", b24.Params{
        	"DIALOG_ID":  "chat1489",
        	"MESSAGE_ID": 84869,
        })
        if err != nil {
        	return fmt.Errorf("im.dialog.unread: %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)