Task::canCreate

public function canCreate($item, $userId = 0)
{
	$result = new Result();

	$userId = $item->getUserId();
	if(!User::isSuper($userId)) // no access check for admins
	{
		$rErrors = $result->getErrors();
		$data = $item;

		$state = $item->getTransitionState();
		if($state->isInProgress())
		{
			$data = $state;
		}

		if($data['RESPONSIBLE_ID'] != $userId && $data['CREATED_BY'] != $userId)
		{
			$rErrors->add('RESPONSIBLE_AND_ORIGINATOR_NOT_ALLOWED', 'You can not add task from other person to another person');
		}

		$groupId = intval($data['GROUP_ID']);
		if($groupId)
		{
			if(!Group::can($groupId, Group::ACTION_CREATE_TASKS, $userId))
			{
				$rErrors->add('PROJECT_ACCESS_DENIED', 'You are not allowed to create tasks in the group [group: '.$groupId.', user: '.$userId.']');
			}
		}
	}

	return $result;
}