title: Quickbooks IPP v3 Invalid Line TaxCode in the request
body: <p>Using the IPP v3 I am trying to submit an invoice with multiple lines with different taxcode(s), I am getting the following error when submitting an invoice with 2 lines with TaxCodeRef mapping to existing TaxCode(s).</p>
  
  <pre><code>&lt;IntuitResponse xmlns="http://schema.intuit.com/finance/v3" time="2015-06-11T00:32:48.687-07:00"&gt;
    &lt;Fault type="ValidationFault"&gt;
      &lt;Error code="6100" element="Line.SalesItemLineDetail.TaxCodeRef"&gt;
        &lt;Message&gt;Invalid Line TaxCode in the request&lt;/Message&gt;
        &lt;Detail&gt;Valid line TaxCodes for US should be TAX or NON. Supplied value: 8&lt;/Detail&gt;
      &lt;/Error&gt;
      &lt;Error code="6100" element="Line.SalesItemLineDetail.TaxCodeRef"&gt;
        &lt;Message&gt;Invalid Line TaxCode in the request&lt;/Message&gt;
        &lt;Detail&gt;Valid line TaxCodes for US should be TAX or NON. Supplied value: 9&lt;/Detail&gt;
      &lt;/Error&gt;
    &lt;/Fault&gt;
  &lt;/IntuitResponse&gt;
  </code></pre>
  
  <p>Here is the submitted XML, TaxCode with Id 8 and 9 are defined and active.</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;ns0:Invoice xmlns:ns0="http://schema.intuit.com/finance/v3"&gt;
    &lt;ns0:TxnDate&gt;2015-06-11&lt;/ns0:TxnDate&gt;
    &lt;ns0:Line&gt;
      &lt;ns0:LineNum&gt;1&lt;/ns0:LineNum&gt;
      &lt;ns0:Description&gt;Product1&lt;/ns0:Description&gt;
      &lt;ns0:Amount&gt;54.95&lt;/ns0:Amount&gt;
      &lt;ns0:DetailType&gt;SalesItemLineDetail&lt;/ns0:DetailType&gt;
      &lt;ns0:SalesItemLineDetail&gt;
        &lt;ns0:ItemRef&gt;20&lt;/ns0:ItemRef&gt;
        &lt;ns0:UnitPrice&gt;54.95&lt;/ns0:UnitPrice&gt;
        &lt;ns0:Qty&gt;1&lt;/ns0:Qty&gt;
        &lt;ns0:TaxCodeRef&gt;8&lt;/ns0:TaxCodeRef&gt;
      &lt;/ns0:SalesItemLineDetail&gt;
    &lt;/ns0:Line&gt;
    &lt;ns0:Line&gt;
      &lt;ns0:LineNum&gt;1&lt;/ns0:LineNum&gt;
      &lt;ns0:Description&gt;Product2&lt;/ns0:Description&gt;
      &lt;ns0:Amount&gt;54.95&lt;/ns0:Amount&gt;
      &lt;ns0:DetailType&gt;SalesItemLineDetail&lt;/ns0:DetailType&gt;
      &lt;ns0:SalesItemLineDetail&gt;
        &lt;ns0:ItemRef&gt;20&lt;/ns0:ItemRef&gt;
        &lt;ns0:UnitPrice&gt;54.95&lt;/ns0:UnitPrice&gt;
        &lt;ns0:Qty&gt;1&lt;/ns0:Qty&gt;
        &lt;ns0:TaxCodeRef&gt;9&lt;/ns0:TaxCodeRef&gt;
      &lt;/ns0:SalesItemLineDetail&gt;
    &lt;/ns0:Line&gt;
    &lt;ns0:CustomerRef&gt;58&lt;/ns0:CustomerRef&gt;
  &lt;/ns0:Invoice&gt;
  </code></pre>
  
  <p>Is it possible to submit one invoice with multiple lines having different TaxCodes for Quickbooks online ? </p>