app-odoo/app_base/views/res_partner_views.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <data>
        <record id="app_view_partner_property_form" model="ir.ui.view">
            <field name="name">res.partner.form</field>
            <field name="model">res.partner</field>
            <field name="priority" eval="1"/>
            <field name="inherit_id" ref="account.view_partner_property_form"/>
            <field name="arch" type="xml">
                <xpath expr="//group[@name='sale']/field[1]" position="before">
                    <field name="customer"/>
                </xpath>
                <xpath expr="//group[@name='purchase']/field[1]" position="before">
                    <field name="supplier"/>
                </xpath>
            </field>
        </record>
    </data>
</odoo>