Element::add

public function add()
{
	$this->param->checkRequiredInputParams(
		[
			"IBLOCK_TYPE_ID",
			"IBLOCK_CODE",
			"IBLOCK_ID",
			"ELEMENT_CODE",
			[
				"FIELDS" => ["NAME"]
			],
		]
	);

	if ($this->param->hasErrors())
	{
		$this->errorCollection->add($this->param->getErrors());

		return false;
	}

	$this->setUrlTemplate();

	$this->validateFields();

	$isEnabledBp = $this->isEnabledBizproc($this->params["IBLOCK_TYPE_ID"]);
	$hasBpTemplatesWithAutoStart = false;
	if ($isEnabledBp)
	{
		$hasBpTemplatesWithAutoStart = $this->hasBpTemplatesWithAutoStart(CBPDocumentEventType::Create);
	}

	if ($this->hasErrors())
	{
		return false;
	}

	$elementFields = $this->getElementFields($this->elementId, $this->params["FIELDS"]);

	$elementObject = new CIBlockElement;
	$this->elementId = $elementObject->add($elementFields, false, true, true);
	if ($this->elementId)
	{
		if ($isEnabledBp && $hasBpTemplatesWithAutoStart)
		{
			$this->startBp($this->elementId, CBPDocumentEventType::Create);
		}

		return $this->elementId;
	}
	else
	{
		if ($elementObject->LAST_ERROR)
		{
			$this->errorCollection->setError(
				new Error($elementObject->LAST_ERROR, self::ERROR_ADD_ELEMENT)
			);
		}
		else
		{
			$this->errorCollection->setError(
				new Error("Unknown error", self::ERROR_ADD_ELEMENT)
			);
		}

		return false;
	}
}