URL            = "https://b24-ar17wx.bitrix24.by/rest/1/1o2...";
    NotificationID = "15668";

    Result = OPI_Bitrix24.DeleteNotification(URL, NotificationID);

    URL            = "b24-ar17wx.bitrix24.by";
    Token          = "c3abf666006e9f06006b12e400000001000...";
    NotificationID = "15670";

    Result = OPI_Bitrix24.DeleteNotification(URL, NotificationID, Token);