rma/crm_rma_advance_location/stock_view.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
        <!-- INHERITED VIEW FOR THE OBJECT : stock_picking -->

        <record id="picking_in_form" model="ir.ui.view">
            <field name="name">crm_claim_rma.picking_in_form</field>
            <field name="model">stock.picking.in</field>
            <field name="inherit_id" ref="stock.view_picking_in_form" />
            <field name="arch" type="xml">
                <!-- Those wizard aren't working yet -->
                <xpath expr="/form/header/button[@string='Return Products']" position="after">
                        <button name="%(action_stock_picking_from_claim_picking)d" 
                                string="Product to stock" type="action"
                                attrs="{'invisible':['|',
                                                    ('state','&lt;&gt;','done'),
                                                    ('claim_id', '=', False)]}"/>
                        <button name="%(action_loss_picking_from_claim_picking)d" 
                                string="Product to Loss" type="action"
                                attrs="{'invisible':['|',
                                                    ('state','&lt;&gt;','done'),
                                                    ('claim_id', '=', False)]}"/>
                        <button name="%(action_used_picking_from_claim_picking)d" 
                                string="Product to refurbish stock" type="action"
                                attrs="{'invisible':['|',
                                                    ('state','&lt;&gt;','done'),
                                                    ('claim_id', '=', False)]}"/>
                </xpath>
            </field>
        </record>

        <record id="warehouse_form" model="ir.ui.view">
            <field name="name">crm_claim_rma.warehouse_form</field>
            <field name="model">stock.warehouse</field>
            <field name="inherit_id" ref="stock.view_warehouse" />
            <field name="arch" type="xml">
                <xpath expr="/form/group/group/field[@name='lot_output_id']" position="after">
                    <field name="lot_rma_id"/>
                    <field name="lot_carrier_loss_id"/>
                    <field name="lot_breakage_loss_id"/>
                    <field name="lot_refurbish_id"/>
                </xpath>
            </field>
        </record>
        

    </data>
</openerp>