tryton/view/action_form.xml

<?xml version="1.0"?>
<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
this repository contains the full copyright notices and license terms. -->
<form col="6">
    <label name="complaint"/>
    <field name="complaint" colspan="5"/>

    <label name="action"/>
    <field name="action"/>
    <label name="result"/>
    <field name="result"/>

    <field name="sale_lines" colspan="6" product="line"/>

    <field name="invoice_lines" colspan="6" product="line"/>

    <label name="quantity"/>
    <field name="quantity" symbol="unit"/>
    <label name="unit_price"/>
    <field name="unit_price" symbol="currency"/>
    <label name="amount"/>
    <field name="amount" symbol="currency"/>
</form>