Редирект 301 / 302

Редирект 301

$response = new \Bitrix\Main\Engine\Response\Redirect('/catalog/');
$response->setStatus('301 Moved Permanently');
$response->send();

Редирект 302

$response = new \Bitrix\Main\Engine\Response\Redirect('/catalog/');
$response->send();

Редирект через функцию

LocalRedirect('/offer/', false, '301 Moved Permanently');