ClientID     = "local.6667fc928a50a9.70414732";
    ClientSecret = "ZeKyeYIgy2NsHZqsIHY6GfG1V...";
    Refresh      = "11f43167006e9f06006b12e400000001000...";

    Результат = OPI_Bitrix24.ОбновитьТокен(ClientID, ClientSecret, Refresh);