<?xml version="1.0"?>
<data>
                    <xpath expr="//field[@name='partner_id']" position="before">
                        <field name="prefix_placeholder" column_invisible="1"/> <!-- Needed for the char_with_placeholder_field widget -->
                        <field name="account_prefix" string="Accounts Prefixes" optional="show" widget="char_with_placeholder_field" options="{'placeholder_field': 'prefix_placeholder'}"/>
                    </xpath>
                    <xpath expr="//field[@name='company_id']" position="before">
                            <field name="product_id" optional="show"/>
                            <field name="product_categ_id" optional="hide"/>
                    </xpath>
                </data>
            