<?xml version="1.0" encoding="utf-8"?>
<request method="invoice.create">
    <invoice>
        <client_id>1</client_id>
        <date/>
        <discount/>
        <first_name/>
        <last_name/>
        <notes/>
        <number/>
        <organization/>
        <p_city/>
        <p_code/>
        <p_country/>
        <p_state/>
        <p_street1/>
        <p_street2/>
        <po_number/>
        <status/>
        <terms/>
        <lines>
            <line>
                <name>Test line 1</name>
                <unit_cost>1</unit_cost>
                <quantity>1</quantity>
            </line>
            <line>
                <name>Test line 2</name>
                <unit_cost>2</unit_cost>
                <quantity>2</quantity>
            </line>
        </lines>
    </invoice>
</request>