DefaultSiteHelper::update

static function update($siteId, $data)
{
	$success = true;
	$entityClass = static::getEntityClass('location');

	$data = static::proxyUpdateRequest($data);
	$errors = static::validateUpdateRequest($data);

	unset($data['ID']);

	if(empty($errors))
		$entityClass::updateMultipleForOwner($siteId, $data); // result is always successfull, unless an exception thrown

	return array(
		'success' => $success,
		'errors' => $errors
	);
}