Форум

<?
include_once($_SERVER['DOCUMENT_ROOT'].'/bitrix/modules/main/include/urlrewrite.php');

CHTTP::SetStatus("404 Not Found");
@define("ERROR_404","Y");

require($_SERVER["DOCUMENT_ROOT"]."/bitrix/header.php");
$APPLICATION->SetTitle("");

$APPLICATION->AddChainItem("Страница не найдена");
$APPLICATION->SetPageProperty("body_class", "page-404");?>

html контент с текстом 404

<?require($_SERVER["DOCUMENT_ROOT"]."/bitrix/footer.php");?>
 

array (
    'CONDITION' => '#^/catalog/#',
    'RULE' => '',
    'ID' => 'bitrix:catalog',
    'PATH' => '/catalog/index.php',
    'SORT' => 100,
  ),