diff --git a/account_usability/models/account_move.py b/account_usability/models/account_move.py
index ff2a329..38bc8bc 100644
--- a/account_usability/models/account_move.py
+++ b/account_usability/models/account_move.py
@@ -195,6 +195,8 @@ class AccountMoveLine(models.Model):
     matched_credit_ids = fields.One2many(string='Partial Reconcile Credit')
     reconcile_string = fields.Char(
         compute='_compute_reconcile_string', string='Reconcile', store=True)
+    # for optional display in tree view
+    product_barcode = fields.Char(related='product_id.barcode', string="Product Barcode")
 
     def show_account_move_form(self):
         self.ensure_one()
diff --git a/account_usability/views/account_move.xml b/account_usability/views/account_move.xml
index 811aa1e..0d45b2f 100644
--- a/account_usability/views/account_move.xml
+++ b/account_usability/views/account_move.xml
@@ -30,6 +30,9 @@
             <field name="matching_number" optional="hide"/>
             <field name="reconcile_string" optional="show"/>
         </xpath>
+        <xpath expr="//field[@name='invoice_line_ids']/tree/field[@name='product_id']" position="after">
+            <field name="product_barcode" optional="hide"/>
+        </xpath>
     </field>
 </record>
 
diff --git a/base_usability/views/res_partner.xml b/base_usability/views/res_partner.xml
index a2bd52a..37c9510 100644
--- a/base_usability/views/res_partner.xml
+++ b/base_usability/views/res_partner.xml
@@ -16,6 +16,10 @@
         <xpath expr="//field[@name='child_ids']/form//field[@name='title']" position="attributes">
             <attribute name="attrs"></attribute>
         </xpath>
+        <!-- Show double VAT partner even when not in editable mode -->
+        <div attrs="{'invisible': [('same_vat_partner_id', '=', False)]}" position="attributes">
+            <attribute name="class">alert alert-warning</attribute>
+        </div>
     </field>
 </record>
 
diff --git a/purchase_usability/models/purchase_order.py b/purchase_usability/models/purchase_order.py
index 6709368..4ac88ef 100644
--- a/purchase_usability/models/purchase_order.py
+++ b/purchase_usability/models/purchase_order.py
@@ -71,3 +71,10 @@ class PurchaseOrder(models.Model):
         #    {'subtotal': 8932.23},
         # ]
         return res
+
+
+class PurchaseOrderLine(models.Model):
+    _inherit = 'purchase.order.line'
+
+    # for optional display in tree view
+    product_barcode = fields.Char(related='product_id.barcode', string="Product Barcode")
diff --git a/purchase_usability/views/purchase_order.xml b/purchase_usability/views/purchase_order.xml
index 87ff95a..f165427 100644
--- a/purchase_usability/views/purchase_order.xml
+++ b/purchase_usability/views/purchase_order.xml
@@ -34,6 +34,9 @@
         <xpath expr="//field[@name='order_line']/form//field[@name='analytic_tag_ids']" position="attributes">
             <attribute name="groups">analytic.group_analytic_tags</attribute>
         </xpath>
+        <xpath expr="//field[@name='order_line']/tree//field[@name='product_id']" position="after">
+            <field name="product_barcode" optional="hide"/>
+        </xpath>
     </field>
 </record>
 
diff --git a/sale_usability/models/sale_order.py b/sale_usability/models/sale_order.py
index 913d7a8..9eb2062 100644
--- a/sale_usability/models/sale_order.py
+++ b/sale_usability/models/sale_order.py
@@ -66,6 +66,9 @@ class SaleOrder(models.Model):
 class SaleOrderLine(models.Model):
     _inherit = 'sale.order.line'
 
+    # for optional display in tree view
+    product_barcode = fields.Char(related='product_id.barcode', string="Product Barcode")
+
     @api.onchange('product_uom', 'product_uom_qty')
     def product_uom_change(self):
         # When the user has manually set a custom price
diff --git a/sale_usability/views/sale_order.xml b/sale_usability/views/sale_order.xml
index 3a13d2e..eda1f3f 100644
--- a/sale_usability/views/sale_order.xml
+++ b/sale_usability/views/sale_order.xml
@@ -26,6 +26,9 @@
         <field name="date_order" position="after">
             <field name="client_order_ref"/>
         </field>
+        <xpath expr="//field[@name='order_line']/tree/field[@name='product_template_id']" position="after">
+            <field name="product_barcode" optional="hide"/>
+        </xpath>
     </field>
 </record>
 
diff --git a/stock_usability/models/stock_move.py b/stock_usability/models/stock_move.py
index ab25ee2..ec761fd 100644
--- a/stock_usability/models/stock_move.py
+++ b/stock_usability/models/stock_move.py
@@ -2,7 +2,7 @@
 # @author Alexis de Lattre <alexis.delattre@akretion.com>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 
-from odoo import models, _
+from odoo import fields, models, _
 from odoo.exceptions import UserError
 import logging
 
@@ -12,6 +12,9 @@ logger = logging.getLogger(__name__)
 class StockMove(models.Model):
     _inherit = 'stock.move'
 
+    # for optional display in tree view
+    product_barcode = fields.Char(related='product_id.barcode', string="Product Barcode")
+
 #    def name_get(self):
 #        '''name_get of stock_move is important for the reservation of the
 #        quants: so want to add the name of the customer and the expected date
@@ -49,6 +52,9 @@ class StockMove(models.Model):
 class StockMoveLine(models.Model):
     _inherit = 'stock.move.line'
 
+    # for optional display in tree view
+    product_barcode = fields.Char(related='product_id.barcode', string="Product Barcode")
+
     # TODO: I think it's not complete
     def button_do_unreserve(self):
         for moveline in self:
diff --git a/stock_usability/views/stock_move.xml b/stock_usability/views/stock_move.xml
index 9c7f288..7477de4 100644
--- a/stock_usability/views/stock_move.xml
+++ b/stock_usability/views/stock_move.xml
@@ -58,6 +58,9 @@
                 states="partially_available,assigned"
                 icon="fa-ban"/>
         </field>
+        <field name="product_id" position="after">
+            <field name="product_barcode" optional="hide"/>
+        </field>
     </field>
 </record>
 
@@ -78,6 +81,20 @@
                 states="partially_available,assigned"
                 icon="fa-ban"/>
         </field>
+        <field name="product_id" position="after">
+            <field name="product_barcode" optional="hide"/>
+        </field>
+    </field>
+</record>
+
+<!-- View embedded in picking -->
+<record id="view_stock_move_line_detailed_operation_tree" model="ir.ui.view">
+    <field name="model">stock.move.line</field>
+    <field name="inherit_id" ref="stock.view_stock_move_line_detailed_operation_tree" />
+    <field name="arch" type="xml">
+        <field name="product_id" position="after">
+            <field name="product_barcode" optional="hide"/>
+        </field>
     </field>
 </record>
 
diff --git a/stock_usability/views/stock_picking.xml b/stock_usability/views/stock_picking.xml
index 04c2f7c..1b81db0 100644
--- a/stock_usability/views/stock_picking.xml
+++ b/stock_usability/views/stock_picking.xml
@@ -31,8 +31,9 @@
         <xpath expr="//field[@name='move_ids_without_package']/tree/field[@name='location_id']" position="replace"/>
         <xpath expr="//field[@name='move_ids_without_package']/tree/field[@name='location_dest_id']" position="replace"/>
         <xpath expr="//field[@name='move_ids_without_package']/tree/field[@name='product_id']" position="after">
-            <field name="location_id" groups="stock.group_stock_multi_locations"/>
-            <field name="location_dest_id" groups="stock.group_stock_multi_locations"/>
+            <field name="product_barcode" optional="hide"/>
+            <field name="location_id" groups="stock.group_stock_multi_locations" optional="show"/>
+            <field name="location_dest_id" groups="stock.group_stock_multi_locations" optional="show"/>
         </xpath>
         <xpath expr="//field[@name='move_ids_without_package']/tree/button[@name='action_assign_serial']" position="after">
             <button type="object" name="button_do_unreserve" string="Unreserve"
@@ -40,15 +41,6 @@
                 states="partially_available,assigned"
                 icon="fa-ban"/>
         </xpath>
-        <!-- STOCK MOVE LINE -->
-        <!--
-        <xpath expr="//field[@name='move_line_ids_without_package']/tree/field[@name='location_id']" position="attributes">
-            <attribute name="attrs">{}</attribute>
-        </xpath>
-        <xpath expr="//field[@name='move_line_ids_without_package']/tree/field[@name='location_dest_id']" position="attributes">
-            <attribute name="attrs">{}</attribute>
-        </xpath>
-        -->
     </field>
 </record>