ActivityController::getEntityFields

public function getEntityFields($entityID)
{
	$dbResult = \CCrmActivity::GetList(
		array(),
		array('=ID' => $entityID, 'CHECK_PERMISSIONS' => 'N'),
		false,
		false,
		array('*')
	);
	$fields = $dbResult->Fetch();
	if (is_array($fields))
	{
		$fields['IS_INCOMING_CHANNEL'] = \Bitrix\Crm\Activity\IncomingChannel::getInstance()->isIncomingChannel((int)$entityID) ? 'Y' : 'N';

		return $fields;
	}

	return null;
}