Error to integrate with QuickBooks - php

Question

I'm doing an integration with PHP my system, so I can launch sales in QuickBooks. To integrate'm using the API provided this link https://github.com/consolibyte/quickbooks-php.
Set everything as instructed, but the moment you throw a sale, I get the following error:
2020: [Required param missing, need to supply the required value for the API, Required parameter Line.DetailType is missing in the request]
The class that generates invoices is currently as follows:
<?php
require_once dirname(__FILE__) . '/config.php';
require_once dirname(__FILE__) . '/views/header.tpl.php';
?>
<pre>
<?php
$InvoiceService = new QuickBooks_IPP_Service_Invoice();
$Invoice = new QuickBooks_IPP_Object_Invoice();
$Invoice->setDocNumber('WEB' . mt_rand(0, 10000));
$Invoice->setTxnDate('2015-12-10');
$Line = new QuickBooks_IPP_Object_Line();
$Line->setDetailType('Example');
$Line->setAmount(12.95 * 2);
$Line->setDescription('Example');
$SalesItemLineDetail = new QuickBooks_IPP_Object_SalesItemLineDetail();
$SalesItemLineDetail->setItemRef('8');
$SalesItemLineDetail->setUnitPrice(12.95);
$SalesItemLineDetail->setQty(2);
$Line->addSalesItemLineDetail($SalesItemLineDetail);
$Invoice->addLine($Line);
$Invoice->setCustomerRef('67');
if ($resp = $InvoiceService->add($Context, $realm, $Invoice))
{
print('Our new Invoice ID is: [' . $resp . ']');
}
else
{
print($InvoiceService->lastError());
}
?>
</pre>
<?php
require_once dirname(__FILE__) . '/views/footer.tpl.php';
Someone has gone through this problem?
I really need help because they do not understand much about QuickBooks.
Thanks,

Answer 1

This error:
Required parameter Line.DetailType is missing in the request
Means you are missing a required parameter named Line.DetailType in your request. More specifically -- in your case, you're actually sending an invalid value for this parameter.
$Line->setDetailType('Example');
That ^^^ is not valid. Please take the time to refer to Intuit's documentation:
https://developer.intuit.com/docs/api/accounting/Invoice
And take the time to refer to the examples:
https://github.com/consolibyte/quickbooks-php/blob/master/docs/partner_platform/example_app_ipp_v3/example_invoice_add.php#L21
And notices that the documentation/examples show the correct value is:
// Set to SalesItemLineDetailfor this type of line.
$Line->setDetailType('SalesItemLineDetail');