quickbooks desktop web connector qbxml: add invoice with CLASS field - quickbooks

Question

I'm trying to add an invoice and populate its CLASS field with a value (I can't post a screenshot of the invoice "CLASS" field because I don't have the reputation, its the field just to the right of "PRICE EACH" field), I don't know how to add the CLASS value in the qbxml.
Here is the xml I'm using and it works:
$xml = '<?xml version="1.0" encoding="utf-8"?>
<?qbxml version="2.0"?>
<QBXML>
<QBXMLMsgsRq onError="stopOnError">
<InvoiceAddRq requestID="xxxxxxxx">
<InvoiceAdd>
<CustomerRef>
<FullName>Some company:12 street gotham</FullName>
</CustomerRef>
<TxnDate>2015-01-23</TxnDate>
<RefNumber>TPY125</RefNumber>
<BillAddress>
<Addr1>some bill address</Addr1>
<City>some bill city</City>
<State>some bill state</State>
<PostalCode>some bill zip</PostalCode>
<Country>United States</Country>
</BillAddress>
<ShipAddress>
<Addr1>some ship address</Addr1>
<City>some ship address</City>
<State>some ship state</State>
<PostalCode>some ship zip</PostalCode>
<Country>United States</Country>
</ShipAddress>
<PONumber></PONumber>
<TermsRef>
<FullName>Net 120</FullName>
</TermsRef>
<Memo></Memo>
<InvoiceLineAdd>
<ItemRef>
<FullName>16 Electrical and Lighting</FullName>
</ItemRef>
<Desc>Item 1 Description Goes Here</Desc>
<Quantity>1</Quantity>
<Rate>33.00</Rate>
</InvoiceLineAdd>
</InvoiceAdd>
</InvoiceAddRq>
</QBXMLMsgsRq>
</QBXML>';
I'm using QuickBooks Enterprise, Web connector ver: 2.1.0.30. So what do I have to add in the xml for the "CLASS" field?
Thanks in advance.

Answer 1

You can always refer to the QuickBooks OSR for XML reference for QuickBooks desktop:
https://developer-static.intuit.com/qbSDK-current/Common/newOSR/index.html
In this specific case, you can set the Class on a per line item basis like this:
...
<InvoiceLineAdd>
<ItemRef>
<FullName>16 Electrical and Lighting</FullName>
</ItemRef>
<Desc>Item 1 Description Goes Here</Desc>
<Quantity>1</Quantity>
<Rate>33.00</Rate>
<ClassRef>
<ListID> ... specify a ListID here ...</ListID
<!-- Or, instead of ListID you can specify: -->
<FullName> ... specify Class FullName here ...</FullName>
</InvoiceLineAdd>
...