stock_transfer_order/wizard/wizard_transfer_details.xml

<?xml version="1.0" encoding="UTF-8"?>
<openerp>
    <data>
        <record id="wizard_transfer_details" model="ir.ui.view">
            <field name="name">Enter transfer details</field>
            <field name="model">stock.transfer.order.details</field>
            <field name="arch" type="xml">
                <form string="Transfer details" version="7">
                  <field name="picking_source_warehouse_id" invisible="True"/>
                  <field name="picking_destination_warehouse_id" invisible="True"/>
                  <group>
                  <field name="picking_type_id"/>
                </group>

        <group string="Productos a transferir"></group>
                <group>
                        <field name="item_ids" context="{'default_source_warehouse':picking_source_warehouse_id,
                                  'default_dest_warehouse':picking_destination_warehouse_id}" nolabel="1">
                            <tree string="Detalles" editable="bottom" >
                                <field name="product_id" context="{'uom':product_uom_id}" on_change="product_id_change(product_id,product_uom_id,context)"/>
                                <field name="quantity"/>
                                <field name="product_uom_id" options="{'no_create':True,'no_open':True}" groups="product.group_uom"/>
                                <field name="source_warehouse" context="{'nombre_para_stock_transfer': True, 'transfer_product_id':product_id}" options="{'no_create':True,'no_open':True}"/>
                                <field name="dest_warehouse" context="{'nombre_para_stock_transfer': False}" options="{'no_create':True,'no_open':True}"/>
                                <field name="sourceloc_id" invisible="True"/>
                                <field name="destinationloc_id" invisible="True"/>
                            </tree>
                        </field>
                      </group>

                    <footer>
                        <button name="do_detailed_transfer2" string="Transferir" type="object" class="oe_highlight"/>
                        or
                        <button string="_Cancel" class="oe_link" special="cancel" />
                    </footer>
                </form>
            </field>
        </record>

    </data>
</openerp>