Activity::deleteAction

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

	if(!\CCrmActivity::CheckUpdatePermission($ownerTypeId, $ownerId))
	{
		$this->addError(\Bitrix\Crm\Controller\ErrorCode::getAccessDeniedError());

		return;
	}

	if (!\CCrmActivity::Delete($activityId))
	{
		$this->addError(new Error(implode(', ', \CCrmActivity::GetErrorMessages()), 'CAN_NOT_DELETE'));
	}
}