CAllCrmQuote::Exists

static function Exists($ID)
{
	$ID = intval($ID);
	if($ID <= 0)
	{
		return false;
	}

	$dbRes = self::GetList(
		array(),
		array('=ID' => $ID, 'CHECK_PERMISSIONS' => 'N'),
		false,
		false,
		array('ID')
	);

	return is_array($dbRes->Fetch());
}