diff --git a/sale_order_partials/README.rst b/sale_order_partials/README.rst
new file mode 100644
index 000000000..1c65b59de
--- /dev/null
+++ b/sale_order_partials/README.rst
@@ -0,0 +1,17 @@
+.. image:: https://img.shields.io/badge/licence-AGPL--3-blue.svg
+   :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+   :alt: License: AGPL-3
+
+===================
+Partial Sale Orders
+===================
+
+Creates related sale orders
+
+Credits
+=======
+
+Contributors
+------------
+* Mikel Arregi <mikelarregi@avanzosc.es>
+* Ana Juaristi <anajuaristi@avanzosc.es>
diff --git a/sale_order_partials/__init__.py b/sale_order_partials/__init__.py
new file mode 100644
index 000000000..5ac02eccf
--- /dev/null
+++ b/sale_order_partials/__init__.py
@@ -0,0 +1,5 @@
+# -*- coding: utf-8 -*-
+# Copyright 2018 Mikel Arregi Etxaniz - AvanzOSC
+# License AGPL-3 - See http://www.gnu.org/licenses/agpl-3.0.html
+from . import models
+from . import wizard
\ No newline at end of file
diff --git a/sale_order_partials/__openerp__.py b/sale_order_partials/__openerp__.py
new file mode 100644
index 000000000..4687e7fdb
--- /dev/null
+++ b/sale_order_partials/__openerp__.py
@@ -0,0 +1,29 @@
+# -*- coding: utf-8 -*-
+# © Copyright 2018 Mikel Arregi Etxaniz - AvanzOSC
+# License AGPL-3 - See http://www.gnu.org/licenses/agpl-3.0.html
+{
+    "name": "Partial sale orders",
+    "version": "8.0.1.0.0",
+    "license": "AGPL-3",
+    "depends": [
+        "sale",
+        "stock",
+        "sale_order_type",
+    ],
+    "author": "OdooMRP team, "
+              "AvanzOSC, "
+              "Odoo Community Association (OCA)",
+    "website": "http://www.odoomrp.com",
+    "contributors": [
+        "Mikel Arregi <mikelarregi@avanzosc.es>",
+        "Ana Juaristi <anajuaristi@avanzosc.es>",
+    ],
+    "category": "",
+    "summary": "",
+    "data": [
+        "views/sale_order_view.xml",
+        "views/res_config_view.xml",
+        "wizard/duplicate_upgradable_sale_view.xml",
+    ],
+    "installable": True,
+}
diff --git a/sale_order_partials/models/__init__.py b/sale_order_partials/models/__init__.py
new file mode 100644
index 000000000..364132b83
--- /dev/null
+++ b/sale_order_partials/models/__init__.py
@@ -0,0 +1,5 @@
+# -*- coding: utf-8 -*-
+# Copyright 2018 Mikel Arregi Etxaniz - AvanzOSC
+# License AGPL-3 - See http://www.gnu.org/licenses/agpl-3.0.html
+from . import sale
+from . import res_config
diff --git a/sale_order_partials/models/res_config.py b/sale_order_partials/models/res_config.py
new file mode 100644
index 000000000..c2358ff62
--- /dev/null
+++ b/sale_order_partials/models/res_config.py
@@ -0,0 +1,40 @@
+# -*- coding: utf-8 -*-
+# Copyright 2018 Mikel Arregi Etxaniz - AvanzOSC
+# License AGPL-3 - See http://www.gnu.org/licenses/agpl-3.0.html
+from openerp import api, fields, models
+
+
+class SaleConfigSettings(models.TransientModel):
+    _inherit = 'sale.config.settings'
+
+    sale_type_id = fields.Many2one(comodel_name='sale.order.type',
+                                   string="Partial orders type")
+
+    def _get_parameter(self, key, default=False):
+        param_obj = self.env['ir.config_parameter']
+        rec = param_obj.search([('key', '=', key)])
+        return rec or default
+
+    def _write_or_create_param(self, key, value):
+        param_obj = self.env['ir.config_parameter']
+        rec = self._get_parameter(key)
+        if rec:
+            if not value:
+                rec.unlink()
+            else:
+                rec.value = value
+        elif value:
+            param_obj.create({'key': key, 'value': value})
+
+    @api.multi
+    def get_default_parameters(self):
+        def get_value(key, default=''):
+            rec = self._get_parameter(key)
+            return rec and rec.value or default
+        return {
+            'sale_type_id': get_value('sale.type.id', False),
+        }
+
+    @api.multi
+    def set_parameters(self):
+        self._write_or_create_param('sale.type.id', self.sale_type_id.id)
diff --git a/sale_order_partials/models/sale.py b/sale_order_partials/models/sale.py
new file mode 100644
index 000000000..c5d73d182
--- /dev/null
+++ b/sale_order_partials/models/sale.py
@@ -0,0 +1,82 @@
+# -*- coding: utf-8 -*-
+# Copyright 2018 Mikel Arregi Etxaniz - AvanzOSC
+# License AGPL-3 - See http://www.gnu.org/licenses/agpl-3.0.html
+from openerp import api, exceptions, fields, models, _
+from openerp.addons import decimal_precision as dp
+
+
+class SaleOrder(models.Model):
+    _inherit = "sale.order"
+
+    child_order_ids = fields.One2many(comodel_name="sale.order",
+                                      inverse_name="parent_order_id",
+                                      string="Sales")
+    parent_order_id = fields.Many2one(comodel_name="sale.order")
+    served_quantity = fields.Float(digits=dp.get_precision('Product Unit of '
+                                                           'Measure'),
+                                   compute="_compute_line_quantities")
+    not_served_quantity = fields.Float(digits=dp.get_precision(
+        'Product Unit of Measure'), compute="_compute_line_quantities")
+    reserved_qty = fields.Float(digits=dp.get_precision(
+        'Product Unit of Measure'), compute="_compute_line_quantities")
+    served_quantity_percentage = fields.Float(digits=dp.get_precision(
+        'Product Unit of Measure'), compute="_compute_line_quantities")
+    upgrade = fields.Boolean(string="Upgrade", copy=False)
+
+    @api.multi
+    def action_open_partial_sales(self):
+        template_obj = self.env['product.template']
+        result = template_obj._get_act_window_dict('sale.action_orders')
+        result['domain'] = "[('parent_order_id', '=', %d)]" % self.id
+        result['context'] = {'search_default_internal_loc': 1}
+        return result
+
+    @api.depends("order_line")
+    def _compute_line_quantities(self):
+        for record in self:
+            if record.upgrade and record.order_line:
+                total = record.order_line[0].product_uom_qty
+                moves = record.child_order_ids.mapped(
+                    'picking_ids.move_lines').filtered(
+                        lambda x: x.state == 'done')
+                served_qty = sum(moves.mapped("product_uom_qty"))
+                not_served_qty = total - served_qty
+                record.served_quantity = served_qty
+                record.reserved_qty = record.reserved_child_qty() - served_qty
+                record.not_served_quantity = not_served_qty
+                record.served_quantity_percentage = (
+                    served_qty / total * 100)
+
+    @api.constrains("order_line", "upgrade")
+    def check_sale_upgradable_has_one_line(self):
+        if self.upgrade and len(self.order_line) > 1:
+            raise exceptions.Warning('Sale upgrades can only have one '
+                                     'order line')
+
+    @api.multi
+    def action_create_order_from_upgrade(self, qty=None):
+        param_obj = self.env['sale.config.settings']
+        sale_type_param = param_obj._get_parameter('sale.type.id')
+        sale_type = sale_type_param and sale_type_param.value
+        for record in self:
+            if record.upgrade and record.invoiced:
+                new_record = record.copy({'parent_order_id': record.id,
+                                          'type_id': int(sale_type)})
+                if qty:
+                    new_record.order_line[0].write({'product_uom_qty': qty,
+                                                    'discount': 100.})
+            elif not record.upgrade:
+                raise exceptions.Warning(
+                    _("The order %s is not upgradable. Edit order and check "
+                      "'Upgrade' field") % record.name)
+            else:
+                raise exceptions.Warning(_("There are unpaid invoices"))
+
+    @api.multi
+    def reserved_child_qty(self):
+        self.ensure_one()
+        not_canceled_children = self.child_order_ids.filtered(
+            lambda x: x.state != "cancel")
+        reserved_qty = sum(not_canceled_children.mapped(
+            "order_line.product_uom_qty"))
+        return reserved_qty
diff --git a/sale_order_partials/tests/__init__.py b/sale_order_partials/tests/__init__.py
new file mode 100644
index 000000000..23e7f2417
--- /dev/null
+++ b/sale_order_partials/tests/__init__.py
@@ -0,0 +1,4 @@
+# -*- coding: utf-8 -*-
+# Copyright 2018 Mikel Arregi Etxaniz - AvanzOSC
+# License AGPL-3 - See http://www.gnu.org/licenses/agpl-3.0.html
+from . import test_sale_order_partials
diff --git a/sale_order_partials/tests/test_sale_order_partials.py b/sale_order_partials/tests/test_sale_order_partials.py
new file mode 100644
index 000000000..1f46dac5e
--- /dev/null
+++ b/sale_order_partials/tests/test_sale_order_partials.py
@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+# Copyright 2018 Mikel Arregi Etxaniz - AvanzOSC
+# License AGPL-3 - See http://www.gnu.org/licenses/agpl-3.0.html
+
+import openerp.tests.common as common
+from openerp import exceptions
+
+
+class SaleOrderPartials(common.SavepointCase):
+
+    @classmethod
+    def setUpClass(cls):
+        super(SaleOrderPartials, cls).setUpClass()
+        cls.wiz_obj = cls.env['duplicate.upgradable.sale']
+        cls.partner = cls.env['res.partner'].create({
+            'name': 'Partner to test',
+        })
+        cls.product = cls.env['product.product'].create({
+            'name': 'Product to test'
+        })
+        cls.sale_order = cls.env['sale.order'].create({
+            'partner_id': cls.partner.id,
+            'upgrade': True,
+            'order_line': [(0, 0, {'product_id': cls.product.id,
+                                   'product_uom_qty': 100}, )],
+        })
+
+    def test_partials(self):
+        wiz = self.wiz_obj.with_context(active_ids=[
+            self.sale_order.id]).create({
+                'quantity': 5})
+        with self.assertRaises(exceptions.Warning):
+            wiz.action_duplicate()
diff --git a/sale_order_partials/views/res_config_view.xml b/sale_order_partials/views/res_config_view.xml
new file mode 100644
index 000000000..e5bb8e875
--- /dev/null
+++ b/sale_order_partials/views/res_config_view.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<openerp>
+    <data noupdate="0">
+        <record id="view_sale_conf_upgradable_type" model="ir.ui.view">
+            <field name="name">view.sale.upgradable.type</field>
+            <field name="model">sale.config.settings</field>
+            <field name="inherit_id" ref="sale.view_sales_config"/>
+            <field name="arch" type="xml">
+                 <xpath expr="//div[@name='Sale Features']" position="inside">
+                     <div>
+                          <label for="sale_type_id"/>
+                          <field name="sale_type_id" class="oe_inline"/>
+                     </div>
+                 </xpath>
+            </field>
+        </record>
+    </data>
+</openerp>
diff --git a/sale_order_partials/views/sale_order_view.xml b/sale_order_partials/views/sale_order_view.xml
new file mode 100644
index 000000000..a814e8b4a
--- /dev/null
+++ b/sale_order_partials/views/sale_order_view.xml
@@ -0,0 +1,122 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<openerp>
+    <data>
+
+    <record model="ir.ui.view" id="upgradable_sale_order_search">
+        <field name="name">upgradable.sale.order.search</field>
+        <field name="model">sale.order</field>
+        <field name="inherit_id" ref="sale.view_sales_order_filter" />
+        <field name="arch" type="xml">
+            <field name="product_id" position="after">
+                <field name="parent_order_id"/>
+            </field>
+            <filter string="Done" position="after">
+                <filter string="Upgrade" domain="[('upgrade','=',True)]"
+                        help="Upgradable sale orders"/>
+            </filter>
+            <filter string="Order Month" position="after">
+                <filter string="Grouped partials" domain="[]"
+                        context="{'group_by':'parent_order_id'}"/>
+                <filter string="Sale type" domain="[]"
+                        context="{'group_by':'type_id'}"/>
+            </filter>
+        </field>
+    </record>
+
+    <record model="ir.ui.view" id="upgradable_sale_order_form">
+        <field name="name">upgradable.sale.order.form</field>
+        <field name="model">sale.order</field>
+        <field name="inherit_id" ref="sale.view_order_form" />
+        <field name="arch" type="xml">
+            <field name="partner_id" position="before">
+                <field name="child_order_ids" invisible="True"/>
+                <field name="parent_order_id" readonly="True"
+                       attrs="{'invisible': [('parent_order_id', '=', False)]}"/>
+            </field>
+            <xpath expr="//notebook[1]" position="before">
+                <group colspan="2">
+                    <field name="upgrade"
+                           attrs="{'invisible': [('parent_order_id', '!=', False)]}"/>
+                    <field name="served_quantity" attrs="{'invisible': [('upgrade', '=', False)]}"/>
+                    <label for="not_served_quantity" attrs="{'invisible': [('upgrade', '=', False)]}"/>
+                    <div attrs="{'invisible': [('upgrade', '=', False)]}">
+                        <field name="not_served_quantity"
+                               class="oe_inline"/>
+                        (<field name="reserved_qty"
+                               class="oe_inline"
+                               />)
+                    </div>
+                    <field name="served_quantity_percentage"
+                           attrs="{'invisible': [('upgrade', '=', False)]}"
+                           widget="progressbar"/>
+                </group>
+            </xpath>
+        </field>
+    </record>
+
+    <record model="ir.ui.view" id="sale.sale_order_buttons">
+        <field name="name">sale.order.buttons</field>
+        <field name="model">sale.order</field>
+        <field name="inherit_id" ref="sale.view_order_form" />
+        <field name="arch" type="xml">
+            <h1 position="after">
+                <div class="oe_right oe_button_box" name="buttons">
+                </div>
+            </h1>
+        </field>
+    </record>
+
+    <record model="ir.ui.view" id="upgradable_sale_order_button_form">
+        <field name="name">upgradable.sale.order.button.form</field>
+        <field name="model">sale.order</field>
+        <field name="inherit_id" ref="sale.sale_order_buttons" />
+        <field name="arch" type="xml">
+            <div name="buttons" position="inside">
+                <button class="oe_stat_button"
+                        name="action_open_partial_sales"
+                        icon="fa-archive" type="object"
+                        string="Partial sales"
+                        attrs="{'invisible': [('upgrade', '=', False)]}">
+                </button>
+            </div>
+        </field>
+    </record>
+
+
+
+    <record model="ir.ui.view" id="upgradable_sale_order_tree">
+        <field name="name">upgradable.sale.order.tree</field>
+        <field name="model">sale.order</field>
+        <field name="inherit_id" ref="sale.view_order_tree" />
+        <field name="arch" type="xml">
+            <field name="state" position="before">
+                <field name="upgrade" />
+                <field name="served_quantity"/>
+                <field name="reserved_qty"/>
+                <field name="not_served_quantity"/>
+                <field name="served_quantity_percentage"
+                       widget="progressbar"/>
+            </field>
+        </field>
+    </record>
+
+    <record model="ir.ui.view" id="tf_view_picking_search">
+        <field name="name">tf.view.picking.search</field>
+        <field name="model">stock.picking</field>
+        <field name="inherit_id" ref="stock.view_picking_internal_search"/>
+        <field name="arch" type="xml">
+                <filter name="backorder" position="after">
+                    <filter string="Delivery Day" domain="[]"
+                            context="{'group_by': 'tf_fecha_entrega:year'}" />
+                    <filter string="Delivery Day" domain="[]"
+                            context="{'group_by': 'tf_fecha_entrega:month'}" />
+                    <filter string="Day" domain="[]"
+                            context="{'group_by': 'tf_fecha_entrega:day'}" />
+                </filter>
+        </field>
+    </record>
+
+
+
+    </data>
+</openerp>
diff --git a/sale_order_partials/wizard/__init__.py b/sale_order_partials/wizard/__init__.py
new file mode 100644
index 000000000..98941b02c
--- /dev/null
+++ b/sale_order_partials/wizard/__init__.py
@@ -0,0 +1,4 @@
+# -*- coding: utf-8 -*-
+# Copyright 2018 Mikel Arregi Etxaniz - AvanzOSC
+# License AGPL-3 - See http://www.gnu.org/licenses/agpl-3.0.html
+from . import duplicate_upgradable_sal
diff --git a/sale_order_partials/wizard/duplicate_upgradable_sal.py b/sale_order_partials/wizard/duplicate_upgradable_sal.py
new file mode 100644
index 000000000..df27d59cc
--- /dev/null
+++ b/sale_order_partials/wizard/duplicate_upgradable_sal.py
@@ -0,0 +1,41 @@
+# -*- coding: utf-8 -*-
+# Copyright 2018 Mikel Arregi Etxaniz - AvanzOSC
+# License AGPL-3 - See http://www.gnu.org/licenses/agpl-3.0.html
+from openerp import api, exceptions, fields, models, _
+from openerp.addons import decimal_precision as dp
+
+
+class DuplicateUpgradableSale(models.TransientModel):
+    _name = "duplicate.upgradable.sale"
+
+    in_process_quantity = fields.Float(digits=dp.get_precision(
+        'Product Unit of Measure'))
+    not_reserved_quantity = fields.Float(digits=dp.get_precision(
+        'Product Unit of Measure'))
+    quantity = fields.Float(digits=dp.get_precision(
+        'Product Unit of Measure'))
+
+    @api.model
+    def default_get(self, var_fields):
+        res = super(DuplicateUpgradableSale, self).default_get(var_fields)
+        order = self.env['sale.order'].browse(self._context.get('active_ids'))
+        order.ensure_one()
+        if not order.upgrade:
+            raise exceptions.Warning(_("Order not upgradable"))
+        reserved_qty = order.reserved_child_qty()
+        total = order.order_line[0].product_uom_qty
+        res.update(
+            {'in_process_quantity': reserved_qty,
+             'not_reserved_quantity': total - reserved_qty}
+        )
+        return res
+
+    @api.multi
+    def action_duplicate(self):
+        orders = self.env['sale.order'].browse(self._context.get('active_ids'))
+        orders.ensure_one()
+        quantity = self.quantity or self.not_reserved_quantity or False
+        if not quantity or quantity > self.not_reserved_quantity:
+            raise exceptions.Warning(_("Quantity is excessive or order is "
+                                       "fully served"))
+        orders.action_create_order_from_upgrade(quantity)
diff --git a/sale_order_partials/wizard/duplicate_upgradable_sale_view.xml b/sale_order_partials/wizard/duplicate_upgradable_sale_view.xml
new file mode 100644
index 000000000..1c21017be
--- /dev/null
+++ b/sale_order_partials/wizard/duplicate_upgradable_sale_view.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<openerp>
+    <data>
+        <record model="ir.ui.view" id="duplicate_upgradable_sale_form">
+                    <field name="name">duplicate.upgradable.sale.form</field>
+                    <field name="model">duplicate.upgradable.sale</field>
+                    <field name="arch" type="xml">
+                        <form string="Duplicate upgradable order">
+                            <group>
+                                <field name="in_process_quantity" readonly="1"/>
+                                <field name="not_reserved_quantity" readonly="1"/>
+                                <field name="quantity" />
+                            </group>
+                             <footer>
+                              <button name="action_duplicate" string="Confirm"
+                                      type="object" class="oe_highlight"/>
+                              or
+                              <button string="Cancel" class="oe_link" special="cancel" />
+                          </footer>
+                        </form>
+                    </field>
+                </record>
+
+                <act_window id="wiz_duplicate_upgradable_order"
+                            name="Duplicate upgradable order"
+                            res_model="duplicate.upgradable.sale"
+                            src_model="sale.order"
+                            view_type="form"
+                            view_mode="form"
+                            view_id="duplicate_upgradable_sale_form"
+                            target="new"
+                            key2="client_action_multi"/>
+
+    </data>
+</openerp>