Views: 4619
Last Modified: 23.03.2022

Modifies the 'message read' status: all messages after the specified message (but including the message itself) are marked as unread

Revision Get current information about current API revision (platform version) – im.revision.get : 18

Attention: restCommand function is used here for illustration purposes only. It is taken from the EchoBot example. You can send a REST command with your own function, or use the BX24.callMethod or bitrix24-php-sdk methods.


Parameter Example Req. Description Revision
DIALOG_ID chat29 Yes Dialog ID (chatXXX for chat and user ID for private dialog) 21
MESSAGE_ID 12 Yes Dialog ID. Format:
chatXXX – recipient chat in case of chat message
or XXX – recipient ID, in case of private conversation message

Method call


BX24.callMethod('im.dialog.unread', {
  'DIALOG_ID': chat29,
  'MESSAGE_ID': 12,
}, function(result){


$result = restCommand('im.dialog.unread', Array(
  'DIALOG_ID' => chat29,
  'MESSAGE_ID' => 12,  
), $_REQUEST["auth"]);

Response example

  "result": true

Examples of response with error

    "error": "MESSAGE_ID_ERROR",
    "error_description": "Message ID can't be empty"

Description of keys:

  • error – error code
  • error_description – error brief description

Possible error codes

Code Description
MESSAGE_ID_ERROR Incorrect message ID
DIALOG_ID_EMPTY Incorrect dialog ID

Courses developed by Bitrix24