title: QBXML InvoiceAddRq and Taxes
body: <p>I'm having an issue trying to get tax applied to an invoice with QBXML. I'm using SalesTaxCodeRef in InvoiceLineAdd but it doesn't seem that it's working for whatever reason. This same code worked for SalesReceiptAddRq. Am I missing a flag or something?</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;?qbxml version="11.0"?&gt;&lt;QBXML&gt;
   &lt;QBXMLMsgsRq onError="stopOnError"&gt;
    &lt;InvoiceAddRq requestID="c16d1753af62163f3891551c07a1eed493bb291a"&gt;
     &lt;InvoiceAdd&gt;
      &lt;CustomerRef&gt;
       &lt;FullName&gt;Customers FullName&lt;/FullName&gt;
      &lt;/CustomerRef&gt;
      &lt;TemplateRef&gt;
       &lt;FullName&gt;Default Template&lt;/FullName&gt;
      &lt;/TemplateRef&gt;
      &lt;TxnDate&gt;2013-07-31&lt;/TxnDate&gt;
      &lt;RefNumber&gt;12324&lt;/RefNumber&gt;
      &lt;BillAddress&gt;
       &lt;Addr1&gt;Customers FullName&lt;/Addr1&gt;
       &lt;Addr2&gt;123 Test Dr&lt;/Addr2&gt;
       &lt;Addr3&gt;&lt;/Addr3&gt;
       &lt;City&gt;Customer City&lt;/City&gt;
       &lt;State&gt;AL&lt;/State&gt;
       &lt;PostalCode&gt;12323&lt;/PostalCode&gt;
       &lt;Country&gt;US&lt;/Country&gt;
      &lt;/BillAddress&gt;
      &lt;ShipAddress&gt;
       &lt;Addr1&gt;Customers FullName&lt;/Addr1&gt;
       &lt;Addr2&gt;123 Test Dr&lt;/Addr2&gt;
       &lt;Addr3&gt;&lt;/Addr3&gt;
       &lt;City&gt;Customer City&lt;/City&gt;
       &lt;State&gt;AL&lt;/State&gt;
       &lt;PostalCode&gt;12323&lt;/PostalCode&gt;
       &lt;Country&gt;US&lt;/Country&gt;
      &lt;/ShipAddress&gt;
      &lt;IsPending&gt;false&lt;/IsPending&gt;
      &lt;IsToBePrinted&gt;false&lt;/IsToBePrinted&gt;
      &lt;IsToBeEmailed&gt;false&lt;/IsToBeEmailed&gt;
      &lt;InvoiceLineAdd&gt;
       &lt;ItemRef&gt;
        &lt;ListID&gt;80000540-1339572998&lt;/ListID&gt;
       &lt;/ItemRef&gt;
       &lt;Desc&gt;Item Desc&lt;/Desc&gt;
       &lt;Quantity&gt;1&lt;/Quantity&gt;
       &lt;Rate&gt;39.27&lt;/Rate&gt;
       &lt;SalesTaxCodeRef&gt;
        &lt;FullName&gt;SBT&lt;/FullName&gt;
       &lt;/SalesTaxCodeRef&gt;
      &lt;/InvoiceLineAdd&gt;
     &lt;/InvoiceAdd&gt;
    &lt;/InvoiceAddRq&gt;
   &lt;/QBXMLMsgsRq&gt;
  &lt;/QBXML&gt;
  </code></pre>