Mark message as unreaded

Mark current and all messages after as unreaded

Parameters

Function MarkMessageAsUnreaded(Val URL, Val ChatID, Val MessageID, Val Token = "") Export

Parameter	CLI option	Type	Required	Description
URL	--url	String	✔	URL of webhook or a Bitrix24 domain, when token used
ChatID	--chat	String, Number	✔	Chat ID (as chatXXX) or User ID (as XXX)
MessageID	--message	String, Number	✔	ID of last unreaded message
Token	--token	String	✖	Access token, when app auth method used

Returns

Map Of KeyAndValue - serialized JSON of answer from Bitrix24 API

Advanced call ?

Parameter	Description
proxy	InternetProxy or a structure with fields Protocol, Host, Port, User, Password, UseOSAuthentication
timeout	Request execution timeout
adv_response	Formats the response as a complete HTTP structure with fields code, body, and headers
retries	Number of HTTP request send attempts on 5** status codes or internal client errors
dontwait	Creates a background job and returns its data (for 1C and OneScript only)

tip

Method at API documentation: im.dialog.unread

1C:Enterprise/OneScript code example

    URL    = "https://b24-ar17wx.bitrix24.by/rest/1/av5...";
    ChatID = "3390";

    OPI_TypeConversion.GetLine(ChatID);

    ChatString = "chat" + ChatID;
    MessageID  = "67534";

    Result = OPI_Bitrix24.MarkMessageAsUnreaded(URL, ChatString, MessageID);

    URL       = "b24-ar17wx.bitrix24.by";
    Token     = "a5b00469006e9f06006b12e400000001000...";
    UserID    = 10;
    MessageID = "67536";

    Result = OPI_Bitrix24.MarkMessageAsUnreaded(URL, UserID, MessageID, Token);

Bash

    oint bitrix24 MarkMessageAsUnreaded \
      --url "b24-ar17wx.bitrix24.by" \
      --chat "***" \
      --message 3808 \
      --token "***"

CMD/Bat

    oint bitrix24 MarkMessageAsUnreaded ^
      --url "b24-ar17wx.bitrix24.by" ^
      --chat "***" ^
      --message 3808 ^
      --token "***"

Result

{
 "result": true,
 "time": {
  "start": 1779804860,
  "finish": 1779804860.22716,
  "duration": 0.227160930633545,
  "processing": 0,
  "date_start": "2026-05-26T14:14:20+00:00",
  "date_finish": "2026-05-26T14:14:20+00:00",
  "operating_reset_at": 1779805460,
  "operating": 0.123626947402954
 }
}