eiru_invoice_lines_statement/views/account_voucher_view.xml

<?xml version="1.0" encoding="UTF-8"?>

<openerp>
    <data>
      <record id="view_account_voucher_form_inherit" model="ir.ui.view">
           <field name="name">account.voucher.form.inherit</field>
           <field name="model">account.voucher</field>
           <field name="inherit_id" ref="account_voucher.view_vendor_receipt_form"/>
           <field name="arch" type="xml">
               <field name="partner_id" position="after">

                   <field name="description_completo"/>
               </field>
           </field>
       </record>
       <record id="view_account_voucher_tree_inherit" model="ir.ui.view">
            <field name="name">account.voucher.tree.inherit</field>
            <field name="model">account.voucher</field>
            <field name="inherit_id" ref="account_voucher.view_voucher_tree"/>
            <field name="arch" type="xml">
                <field name="partner_id" position="after">

                    <field name="description_completo"/>
                </field>
            </field>
        </record>
    </data>
</openerp>