br_nfse/views/account_invoice.xml
<?xml version="1.0" encoding="UTF-8"?>
<odoo>
<record id="view_br_nfse_account_invoice_form" model="ir.ui.view">
<field name="name">view_br_nfse.account.invoice.form</field>
<field name="model">account.invoice</field>
<field name="inherit_id" ref="br_account.view_br_account_invoice_form"/>
<field name="arch" type="xml">
<div class="alert alert-info" position="after">
<field name="ambiente_nfse" invisible="1" />
<field name="invoice_model" invisible="1" />
<div class="alert alert-danger" role="alert" style="margin-bottom:0px;"
attrs="{'invisible': ['|', ('ambiente_nfse', '==', '1'), ('invoice_model', 'not in', ('001', '002', '008', '009', '010'))]}">
A Nota de Serviço está em ambiente de homologação
</div>
</div>
</field>
</record>
</odoo>