CAllIBlockSection::checkLoadElements

static function checkLoadElements(array $filter): bool
{
	$result = true;
	if (!empty($filter))
	{
		$blackList = [
			'GLOBAL_ACTIVE' => true,
			'DEPTH_LEVEL' => true,
			'SOCNET_GROUP_ID' => true,
			'RIGHT_MARGIN' => true,
			'LEFT_MARGIN' => true,
			'LEFT_BORDER' => true,
			'RIGHT_BORDER' => true,
			'HAS_ELEMENT' => true,
		];
		foreach($filter as $index => $value)
		{
			$op = CIBlock::MkOperationFilter($index);
			if (isset($blackList[$op['FIELD']]))
			{
				$result = false;
				break;
			}
		}
		unset($op);
	}

	return $result;
}