CIBlockPropertyXmlID::getElementByXmlId

static function getElementByXmlId(string $xmlId)
{
	$filter = [
		'CHECK_PERMISSIONS' => 'Y',
		'MIN_PERMISSION' => 'R',
		'XML_ID' => $xmlId,
		'ACTIVE' => 'Y',
	];

	return CIBlockElement::GetList(
		[],
		$filter,
		false,
		['nTopCount' => 1],
		['ID', 'NAME', 'XML_ID']
	)->Fetch();
}