trytondo-account_invoice_facho/view/party_form.xml

<?xml version="1.0"?>
<data>
  <xpath expr="/form/notebook/page[@name='identifiers']"
         position="after">
    <page string="FE Colombia" name="fe_colombia">
      <field name="fe_identifiers"/>
      <field name="fe_organizations"/>
    </page>
  </xpath>
</data>