odoo/addons/account_invoice_layout/account_invoice_layout_demo.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data noupdate="1">

        <record id="demo_message1" model="notify.message">
            <field name="name">OpenERP SA</field>
            <field name="msg">ERP &amp; CRM Solutions...</field>
        </record>
    </data>
</openerp>