Manager::startSession

static function startSession(array $parameterDocumentType, int $mode, int $userId, int $categoryId = 0)
{
	if (!Mode::isMode($mode))
	{
		return static::getResult(self::ERROR_INCORRECT_MODE);
	}

	[$module, $entity, $documentType] = CBPHelper::ParseDocumentId($parameterDocumentType);

	$session = new Session();
	$session
		->setId(uniqid('', true))
		->setModuleId($module)
		->setEntity($entity)
		->setDocumentType($documentType)
		->setMode($mode)
		->setStartedBy($userId)
		//->setStartedDate(new BitrixMainTypeDateTime())
		->setActive(true)
		->setDocumentCategoryId($categoryId)
	;

	$activeSession = self::getActiveSession();
	if ($activeSession)
	{
		return self::getResult(
			self::ERROR_DEBUGGER_ALREADY_STARTED,
			['session' => $activeSession]
		);
	}
	self::clearStaticCache();

	$result = $session->save();
	if ($result->isSuccess())
	{
		/** @var Session $sessionFromResult */
		$sessionFromResult = $result->getObject();
		$sessionFromResult->fillWorkflowContexts();
		$sessionFromResult->fillDocuments();
		self::setActiveSession($sessionFromResult);
	}

	return $result;
}