l10n_it_account_stamp/views/company_view.xml
<?xml version="1.0" encoding="utf-8"?>
<openerp>
<data>
<record model="ir.ui.view" id="view_account_config_settings">
<field name="name">view_account_config_settings</field>
<field name="model">account.config.settings</field>
<field name="inherit_id" ref="account.view_account_config_settings"/>
<field name="arch" type="xml">
<xpath expr="//div[@name='account_config']" position="after">
<label for="id" string="Tax Stamp Product"/>
<div id="tax_stamp">
<div>
<label for="tax_stamp_product_id"/>
<field name="tax_stamp_product_id" required="1" class="oe_inline"
domain="[('is_stamp', '=', True)]" context="{'default_is_stamp': True}"/>
</div>
</div>
</xpath>
</field>
</record>
</data>
</openerp>