l10n_it_split_payment/views/account_view.xml
<?xml version="1.0" ?>
<openerp>
<data>
<record id="account_fiscal_position_form_sp" model="ir.ui.view">
<field name="name">account.fiscal.position.form.sp</field>
<field name="model">account.fiscal.position</field>
<field name="inherit_id" ref="account.view_account_position_form"/>
<field name="arch" type="xml">
<field name="country_group_id" position="after">
<field name="split_payment"/>
</field>
</field>
</record>
<record id="account_invoice_form_sp" model="ir.ui.view">
<field name="name">account.invoice.form.sp</field>
<field name="model">account.invoice</field>
<field name="inherit_id" ref="account.invoice_form"/>
<field name="arch" type="xml">
<field name="move_id" position="after">
<field name="split_payment" invisible="1"/>
</field>
<field name="amount_tax" position="after">
<field name="amount_sp" widget="monetary"
options="{'currency_field': 'currency_id'}"
attrs="{'invisible': [('split_payment', '=', False)]}"/>
</field>
</field>
</record>
</data>
</openerp>