trytond-carrier_send_shipments_seurvalencia/view/carrier_api_form.xml

<?xml version="1.0"?>
<!-- This file is part of the carrier_send_shipments_seurvalencia module for Tryton.
The COPYRIGHT file at the top level of this repository contains the full
copyright notices and license terms. -->
<data>
    <xpath expr="/form/notebook/page[@id='api']" position="after">
        <page string="Seur Valencia" id="seurvalencia">
        </page>
    </xpath>
</data>