diff --git a/account_invoice_constraint_chronology/__init__.py b/account_invoice_constraint_chronology/__init__.py
new file mode 100644
index 000000000..dcf937772
--- /dev/null
+++ b/account_invoice_constraint_chronology/__init__.py
@@ -0,0 +1,31 @@
+# -*- coding: utf-8 -*-
+#
+#
+#    Authors: Adrien Peiffer
+#    Copyright (c) 2014 Acsone SA/NV (http://www.acsone.eu)
+#    All Rights Reserved
+#
+#    WARNING: This program as such is intended to be used by professional
+#    programmers who take the whole responsibility of assessing all potential
+#    consequences resulting from its eventual inadequacies and bugs.
+#    End users who are looking for a ready-to-use solution with commercial
+#    guarantees and support are strongly advised to contact a Free Software
+#    Service Company.
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+#
+
+from . import model
+from . import tests
diff --git a/account_invoice_constraint_chronology/__openerp__.py b/account_invoice_constraint_chronology/__openerp__.py
new file mode 100644
index 000000000..46a44738b
--- /dev/null
+++ b/account_invoice_constraint_chronology/__openerp__.py
@@ -0,0 +1,59 @@
+# -*- coding: utf-8 -*-
+#
+#
+#    Authors: Adrien Peiffer
+#    Copyright (c) 2014 Acsone SA/NV (http://www.acsone.eu)
+#    All Rights Reserved
+#
+#    WARNING: This program as such is intended to be used by professional
+#    programmers who take the whole responsibility of assessing all potential
+#    consequences resulting from its eventual inadequacies and bugs.
+#    End users who are looking for a ready-to-use solution with commercial
+#    guarantees and support are strongly advised to contact a Free Software
+#    Service Company.
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+#
+
+{
+    "name": "Account Invoice Constraint Chronology",
+    "version": "1.0",
+    "author": "ACSONE SA/NV",
+    "maintainer": "ACSONE SA/NV",
+    "website": "http://www.acsone.eu",
+    "images": [],
+    "category": "Accounting",
+    "depends": ["account"],
+    "description": """
+Account Invoice Constraint Chronology
+=====================================
+
+This module helps ensuring the chronology of invoice numbers.
+
+It prevents the validation of invoices when:
+* there are draft invoices with an anterior date
+* there are validated invoices with a posterior date
+
+The check can be activated on a per-journal basis
+(for sale and purchase journals).
+""",
+    "data": ["view/account_view.xml"],
+    "demo": [],
+    "test": [],
+    "licence": "AGPL-3",
+    "installable": True,
+    "auto_install": False,
+    "application": True,
+}
diff --git a/account_invoice_constraint_chronology/i18n/account_invoice_constraint_chronology.pot b/account_invoice_constraint_chronology/i18n/account_invoice_constraint_chronology.pot
new file mode 100644
index 000000000..c13b71e5f
--- /dev/null
+++ b/account_invoice_constraint_chronology/i18n/account_invoice_constraint_chronology.pot
@@ -0,0 +1,44 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+#	* account_invoice_constraint_chronology
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 8.0rc1\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2014-08-20 14:51+0000\n"
+"PO-Revision-Date: 2014-08-20 14:51+0000\n"
+"Last-Translator: <>\n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: \n"
+
+#. module: account_invoice_constraint_chronology
+#: field:account.journal,check_chronology:0
+msgid "Check Chronology"
+msgstr ""
+
+#. module: account_invoice_constraint_chronology
+#: code:addons/account_invoice_constraint_chronology/model/account_invoice.py:58
+#, python-format
+msgid "Chronology Error. Please confirm older draft invoices before %s and try again."
+msgstr ""
+
+#. module: account_invoice_constraint_chronology
+#: code:addons/account_invoice_constraint_chronology/model/account_invoice.py:76
+#, python-format
+msgid "Chronology Error. There exist at least one invoice with a date posterior to %s."
+msgstr ""
+
+#. module: account_invoice_constraint_chronology
+#: model:ir.model,name:account_invoice_constraint_chronology.model_account_invoice
+msgid "Invoice"
+msgstr ""
+
+#. module: account_invoice_constraint_chronology
+#: model:ir.model,name:account_invoice_constraint_chronology.model_account_journal
+msgid "Journal"
+msgstr ""
+
diff --git a/account_invoice_constraint_chronology/model/__init__.py b/account_invoice_constraint_chronology/model/__init__.py
new file mode 100644
index 000000000..d01496542
--- /dev/null
+++ b/account_invoice_constraint_chronology/model/__init__.py
@@ -0,0 +1,31 @@
+# -*- coding: utf-8 -*-
+#
+#
+#    Authors: Adrien Peiffer
+#    Copyright (c) 2014 Acsone SA/NV (http://www.acsone.eu)
+#    All Rights Reserved
+#
+#    WARNING: This program as such is intended to be used by professional
+#    programmers who take the whole responsibility of assessing all potential
+#    consequences resulting from its eventual inadequacies and bugs.
+#    End users who are looking for a ready-to-use solution with commercial
+#    guarantees and support are strongly advised to contact a Free Software
+#    Service Company.
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+#
+
+from . import account_invoice
+from . import account
diff --git a/account_invoice_constraint_chronology/model/account.py b/account_invoice_constraint_chronology/model/account.py
new file mode 100644
index 000000000..9a7d36337
--- /dev/null
+++ b/account_invoice_constraint_chronology/model/account.py
@@ -0,0 +1,44 @@
+# -*- coding: utf-8 -*-
+#
+#
+#    Authors: Adrien Peiffer
+#    Copyright (c) 2014 Acsone SA/NV (http://www.acsone.eu)
+#    All Rights Reserved
+#
+#    WARNING: This program as such is intended to be used by professional
+#    programmers who take the whole responsibility of assessing all potential
+#    consequences resulting from its eventual inadequacies and bugs.
+#    End users who are looking for a ready-to-use solution with commercial
+#    guarantees and support are strongly advised to contact a Free Software
+#    Service Company.
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+#
+
+from openerp import models, fields, api
+
+
+class account_journal(models.Model):
+    _inherit = ['account.journal']
+
+    check_chronology = fields.Boolean(string='Check Chronology', default=False)
+
+    @api.one
+    @api.onchange('type')
+    def on_change_type(self):
+        if self.type not in ['sale', 'purchase', 'sale_refund',
+                                     'purchase_refund']:
+            self.check_chronology = False
+        return True
diff --git a/account_invoice_constraint_chronology/model/account_invoice.py b/account_invoice_constraint_chronology/model/account_invoice.py
new file mode 100644
index 000000000..c9ac805f5
--- /dev/null
+++ b/account_invoice_constraint_chronology/model/account_invoice.py
@@ -0,0 +1,83 @@
+# -*- coding: utf-8 -*-
+#
+#
+#    Authors: Adrien Peiffer
+#    Copyright (c) 2014 Acsone SA/NV (http://www.acsone.eu)
+#    All Rights Reserved
+#
+#    WARNING: This program as such is intended to be used by professional
+#    programmers who take the whole responsibility of assessing all potential
+#    consequences resulting from its eventual inadequacies and bugs.
+#    End users who are looking for a ready-to-use solution with commercial
+#    guarantees and support are strongly advised to contact a Free Software
+#    Service Company.
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+#
+
+from openerp import models, api, fields
+from openerp.tools.translate import _
+from openerp.tools import DEFAULT_SERVER_DATE_FORMAT
+from datetime import datetime
+from openerp import exceptions
+
+
+class account_invoice(models.Model):
+    _inherit = "account.invoice"
+
+    @api.multi
+    def action_move_create(self):
+        res = super(account_invoice, self).action_move_create()
+        for inv in self:
+            if inv.journal_id.check_chronology:
+                invoices = \
+                    self.search([('state', 'not in',
+                                  ['open', 'paid', 'cancel', 'proforma',
+                                   'proforma2']),
+                                 ('date_invoice', '!=', False),
+                                 ('date_invoice', '<', inv.date_invoice),
+                                 ('journal_id', '=', inv.journal_id.id)],
+                                limit=1)
+                if len(invoices) > 0:
+                    date_invoice_format = datetime\
+                        .strptime(inv.date_invoice,
+                                  DEFAULT_SERVER_DATE_FORMAT)
+                    date_invoice_tz = fields\
+                        .Date.context_today(self, date_invoice_format)
+                    raise exceptions.Warning(_("Chronology Error."
+                                               " Please confirm older draft"
+                                               " invoices before %s and"
+                                               " try again.") %
+                                             date_invoice_tz)
+
+                if inv.internal_number is False:
+                    invoices = self.search([('state', 'in', ['open', 'paid']),
+                                            ('date_invoice', '>',
+                                             inv.date_invoice),
+                                            ('journal_id', '=',
+                                             inv.journal_id.id)],
+                                           limit=1)
+                    if len(invoices) > 0:
+                        date_invoice_format = datetime\
+                            .strptime(inv.date_invoice,
+                                      DEFAULT_SERVER_DATE_FORMAT)
+                        date_invoice_tz = fields\
+                            .Date.context_today(self, date_invoice_format)
+                        raise exceptions.Warning(_("Chronology Error. There"
+                                                   " exist at least one"
+                                                   " invoice with a date"
+                                                   " posterior to %s.") %
+                                                 date_invoice_tz)
+        return res
diff --git a/account_invoice_constraint_chronology/tests/__init__.py b/account_invoice_constraint_chronology/tests/__init__.py
new file mode 100644
index 000000000..cd63538c6
--- /dev/null
+++ b/account_invoice_constraint_chronology/tests/__init__.py
@@ -0,0 +1,38 @@
+# -*- coding: utf-8 -*-
+#
+#
+#    Authors: Adrien Peiffer
+#    Copyright (c) 2014 Acsone SA/NV (http://www.acsone.eu)
+#    All Rights Reserved
+#
+#    WARNING: This program as such is intended to be used by professional
+#    programmers who take the whole responsibility of assessing all potential
+#    consequences resulting from its eventual inadequacies and bugs.
+#    End users who are looking for a ready-to-use solution with commercial
+#    guarantees and support are strongly advised to contact a Free Software
+#    Service Company.
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+#
+
+from . import test_account_constraint_chronology
+
+fast_suite = [
+    test_account_constraint_chronology,
+]
+
+checks = [
+    test_account_constraint_chronology,
+]
diff --git a/account_invoice_constraint_chronology/tests/test_account_constraint_chronology.py b/account_invoice_constraint_chronology/tests/test_account_constraint_chronology.py
new file mode 100644
index 000000000..70895831e
--- /dev/null
+++ b/account_invoice_constraint_chronology/tests/test_account_constraint_chronology.py
@@ -0,0 +1,127 @@
+# -*- coding: utf-8 -*-
+#
+#
+#    Authors: Adrien Peiffer
+#    Copyright (c) 2014 Acsone SA/NV (http://www.acsone.eu)
+#    All Rights Reserved
+#
+#    WARNING: This program as such is intended to be used by professional
+#    programmers who take the whole responsibility of assessing all potential
+#    consequences resulting from its eventual inadequacies and bugs.
+#    End users who are looking for a ready-to-use solution with commercial
+#    guarantees and support are strongly advised to contact a Free Software
+#    Service Company.
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as
+#    published by the Free Software Foundation, either version 3 of the
+#    License, or (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+#
+
+import openerp.tests.common as common
+from openerp import workflow
+from openerp import exceptions
+from datetime import datetime, timedelta
+from openerp.tools import DEFAULT_SERVER_DATE_FORMAT
+
+DB = common.DB
+ADMIN_USER_ID = common.ADMIN_USER_ID
+
+
+def get_simple_product_id(self):
+    return self.env['product.product'].create({'name': 'product_test_01',
+                                               'lst_price': 2000.00,
+                                               })
+
+
+def get_journal_check(self, value):
+    sale_journal_id = self.ref('account.sales_journal')
+    sale_journal = self.env['account.journal'].browse([sale_journal_id])
+    journal = sale_journal.copy()
+    journal.check_chronology = value
+    return journal
+
+
+def get_simple_account_invoice_line_values(self, product_id):
+    return {'name': 'test',
+            'account_id': self.ref('account.a_sale'),
+            'price_unit': 2000.00,
+            'quantity': 1,
+            'product_id': product_id,
+            }
+
+
+def create_simple_invoice(self, journal_id, date):
+    partner_id = self.ref('base.res_partner_2')
+    product = get_simple_product_id(self)
+    return self.env['account.invoice']\
+        .create({'partner_id': partner_id,
+                 'account_id':
+                 self.ref('account.a_recv'),
+                 'journal_id':
+                 journal_id,
+                 'date_invoice': date,
+                 'invoice_line': [(0, 0, {'name': 'test',
+                                          'account_id':
+                                          self.ref('account.a_sale'),
+                                          'price_unit': 2000.00,
+                                          'quantity': 1,
+                                          'product_id': product.id,
+                                          }
+                                   )
+                                  ],
+                 })
+
+
+class TestAccountConstraintChronology(common.TransactionCase):
+
+    def setUp(self):
+        super(TestAccountConstraintChronology, self).setUp()
+        self.context = self.registry("res.users").context_get(self.cr,
+                                                              self.uid)
+
+    def test_invoice_draft(self):
+        journal = get_journal_check(self, True)
+        today = datetime.now()
+        yesterday = today - timedelta(days=1)
+        date = yesterday.strftime(DEFAULT_SERVER_DATE_FORMAT)
+        create_simple_invoice(self, journal.id, date)
+        date = today.strftime(DEFAULT_SERVER_DATE_FORMAT)
+        invoice_2 = create_simple_invoice(self, journal.id, date)
+        self.assertRaises(exceptions.Warning, workflow.trg_validate, self.uid,
+                          'account.invoice', invoice_2.id, 'invoice_open',
+                          self.cr)
+
+    def test_invoice_validate(self):
+        journal = get_journal_check(self, True)
+        today = datetime.now()
+        tomorrow = today + timedelta(days=1)
+        date = tomorrow.strftime(DEFAULT_SERVER_DATE_FORMAT)
+        invoice = create_simple_invoice(self, journal.id, date)
+        workflow.trg_validate(self.uid, 'account.invoice', invoice.id,
+                              'invoice_open', self.cr)
+        date = today.strftime(DEFAULT_SERVER_DATE_FORMAT)
+        invoice_2 = create_simple_invoice(self, journal.id, date)
+        self.assertRaises(exceptions.Warning, workflow.trg_validate, self.uid,
+                          'account.invoice', invoice_2.id, 'invoice_open',
+                          self.cr)
+
+    def test_invoice_without_date(self):
+        journal = get_journal_check(self, True)
+        today = datetime.now()
+        yesterday = today - timedelta(days=1)
+        date = yesterday.strftime(DEFAULT_SERVER_DATE_FORMAT)
+        create_simple_invoice(self, journal.id, date)
+        invoice_2 = create_simple_invoice(self, journal.id, False)
+        self.assertRaises(exceptions.Warning, workflow.trg_validate, self.uid,
+                          'account.invoice', invoice_2.id, 'invoice_open',
+                          self.cr)
diff --git a/account_invoice_constraint_chronology/view/account_view.xml b/account_invoice_constraint_chronology/view/account_view.xml
new file mode 100644
index 000000000..1fc86dfe7
--- /dev/null
+++ b/account_invoice_constraint_chronology/view/account_view.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<openerp>
+    <data>
+        <record id="view_account_journal_form" model="ir.ui.view">
+            <field name="name">account.journal.form (account_constraint_chronology)</field>
+            <field name="model">account.journal</field>
+            <field name="inherit_id" ref="account.view_account_journal_form"/>
+            <field name="arch" type="xml">
+                <field name="entry_posted" position="after">
+                    <field name="check_chronology" attrs="{'readonly': [('type', 'not in', ['sale', 'purchase', 'sale_refund', 'purchase_refund'])]}"/>
+                </field>
+             </field>
+        </record>
+    </data>
+</openerp>