Activity::completeAction

public function completeAction(int $activityId, int $ownerTypeId, int $ownerId): void
{
	$activity = $this->loadActivity($activityId, $ownerTypeId, $ownerId);
	if (!$activity)
	{
		return;
	}

	if(!\CCrmActivity::CheckCompletePermission(
		$ownerTypeId,
		$ownerId,
		Container::getInstance()->getUserPermissions()->getCrmPermissions(),
		['FIELDS' => $activity]
	))
	{
		$provider = \CCrmActivity::GetActivityProvider($activity);
		$error = is_null($provider) ? ErrorCode::getAccessDeniedError() : $provider::getCompletionDeniedError();
		$this->addError($error);

		return;
	}

	if (!\CCrmActivity::Complete($activityId, true, ['REGISTER_SONET_EVENT' => true]))
	{
		$this->addError(new Error(implode(', ', \CCrmActivity::GetErrorMessages()), 'CAN_NOT_COMPLETE'));
	}
}