diff --git a/mrp_production_draft/models/mrp_production.py b/mrp_production_draft/models/mrp_production.py
index 32aeba95f..e8d81e612 100644
--- a/mrp_production_draft/models/mrp_production.py
+++ b/mrp_production_draft/models/mrp_production.py
@@ -2,8 +2,23 @@
 ##############################################################################
 #
 #    Cybrosys Technologies Pvt. Ltd.
-#    Copyright (C) 2017-TODAY Cybrosys Technologies(<https://www.cybrosys.com>).
-#    Maintainer: Cybrosys Technologies (<https://www.cybrosys.com>)
+#    Copyright (C) 2009-TODAY Cybrosys Technologies(<https://www.cybrosys.com>).
+#    Author: fasluca(<https://www.cybrosys.com>)
+#    you can modify it under the terms of the GNU LESSER
+#    GENERAL PUBLIC LICENSE (LGPL v3), Version 3.
+#
+#    It is forbidden to publish, distribute, sublicense, or sell copies
+#    of the Software or modified copies of the Software.
+#
+#    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 LESSER GENERAL PUBLIC LICENSE (LGPL v3) for more details.
+#
+#    You should have received a copy of the GNU LESSER GENERAL PUBLIC LICENSE
+#    GENERAL PUBLIC LICENSE (LGPL v3) along with this program.
+#    If not, see <http://www.gnu.org/licenses/>.
+#
 ##############################################################################
 
 from odoo import api, models, fields, _
@@ -24,6 +39,10 @@ class MrpProduction(models.Model):
         ('cancel', 'Cancelled')], string='State',
         copy=False, default='draft', track_visibility='onchange')
 
+    _sql_constraints = [
+        ('name_uniq', 'check(1=1)', 'Reference must be unique per Company!'),
+    ]
+
     @api.model
     def create(self, values):
         production = super(mp, self).create(values)
@@ -33,13 +52,12 @@ class MrpProduction(models.Model):
     def unlink(self):
         if any(production.state not in ['draft', 'cancel'] for production in self):
             raise UserError(_('Cannot delete a manufacturing order not in draft or cancel state'))
-        return super(MrpProduction, self).unlink()
+        return super(mp, self).unlink()
 
     @api.multi
     def action_confirm(self):
         if not self.name or self.name == _('New'):
             self.name = self.env['ir.sequence'].next_by_code('mrp.production') or _('New')
-            print self.name
         if not self.procurement_group_id:
             self.procurement_group_id = self.env["procurement.group"].create({'name': self.name}).id
         self._generate_moves()