Order::GetDocumentType

static function GetDocumentType($documentId)
{
	$arDocumentID = static::GetDocumentInfo($documentId);
	if (empty($arDocumentID))
	{
		throw new \CBPArgumentNullException('documentId');
	}

	if (!static::isDocumentExists($documentId))
	{
		throw new Main\SystemException('Document is not found.');
	}

	return $arDocumentID['TYPE'];
}