diff --git a/addons/stock/i18n/stock.pot b/addons/stock/i18n/stock.pot
index daae3a0fc74..805485062d1 100644
--- a/addons/stock/i18n/stock.pot
+++ b/addons/stock/i18n/stock.pot
@@ -51,6 +51,12 @@ msgstr ""
 msgid " (reserved)"
 msgstr ""
 
+#. module: stock
+#: code:addons/stock/stock.py:2954
+#, python-format
+msgid "You cannot have two inventory adjustements in state 'in Progess' with the same product(%s), same location(%s), same package, same owner and same lot. Please first validate the first inventory adjustement with this product before creating another one."
+msgstr ""
+
 #. module: stock
 #: code:addons/stock/stock.py:3090
 #, python-format
diff --git a/addons/stock/stock.py b/addons/stock/stock.py
index a4deff3d161..8cef6087172 100644
--- a/addons/stock/stock.py
+++ b/addons/stock/stock.py
@@ -2942,6 +2942,18 @@ class stock_inventory_line(osv.osv):
         'product_uom_id': lambda self, cr, uid, ctx=None: self.pool['ir.model.data'].get_object_reference(cr, uid, 'product', 'product_uom_unit')[1]
     }
 
+    def create(self, cr, uid, values, context=None):
+        product_obj = self.pool.get('product.product')
+        dom = [('product_id', '=', values.get('product_id')), ('inventory_id.state', '=', 'confirm'),
+               ('location_id', '=', values.get('location_id')), ('partner_id', '=', values.get('partner_id')),
+               ('package_id', '=', values.get('package_id')), ('prod_lot_id', '=', values.get('prod_lot_id'))]
+        res = self.search(cr, uid, dom, context=context)
+        if res:
+            location = self.pool['stock.location'].browse(cr, uid, values.get('location_id'), context=context)
+            product = product_obj.browse(cr, uid, values.get('product_id'), context=context)
+            raise Warning(_("You cannot have two inventory adjustements in state 'in Progess' with the same product(%s), same location(%s), same package, same owner and same lot. Please first validate the first inventory adjustement with this product before creating another one.") % (product.name, location.name))
+        return super(stock_inventory_line, self).create(cr, uid, values, context=context)
+
     def _get_quants(self, cr, uid, line, context=None):
         quant_obj = self.pool["stock.quant"]
         dom = [('company_id', '=', line.company_id.id), ('location_id', '=', line.location_id.id), ('lot_id', '=', line.prod_lot_id.id),