diff --git a/product/ERP5/Document/InventoryCell.py b/product/ERP5/Document/InventoryCell.py
index 89f84ea1ddfdae9c4a2c5821b06e7e5c6bf8aaad..37d52ca99db99ec67a91329e0592a898f576cff8 100644
--- a/product/ERP5/Document/InventoryCell.py
+++ b/product/ERP5/Document/InventoryCell.py
@@ -58,7 +58,7 @@ class InventoryCell(DeliveryCell):
     property_sheets = ( PropertySheet.Base
                       , PropertySheet.CategoryCore
                       , PropertySheet.Amount
-                      , PropertySheet.Inventory
+                      , PropertySheet.InventoryMovement
                       , PropertySheet.Task
                       , PropertySheet.Movement
                       , PropertySheet.Price
diff --git a/product/ERP5/Document/InventoryLine.py b/product/ERP5/Document/InventoryLine.py
index 60240ef92f4437a38cd4a64659aa571d38e486a9..3ecc5b1e2fa9fafbd150dae93454788c9ce5bf57 100644
--- a/product/ERP5/Document/InventoryLine.py
+++ b/product/ERP5/Document/InventoryLine.py
@@ -58,7 +58,7 @@ class InventoryLine(DeliveryLine):
                       , PropertySheet.XMLObject
                       , PropertySheet.CategoryCore
                       , PropertySheet.Amount
-                      , PropertySheet.Inventory
+                      , PropertySheet.InventoryMovement
                       , PropertySheet.Task
                       , PropertySheet.Arrow
                       , PropertySheet.Movement
diff --git a/product/ERP5/PropertySheet/InventoryMovement.py b/product/ERP5/PropertySheet/InventoryMovement.py
new file mode 100644
index 0000000000000000000000000000000000000000..979c19311e098db6c1a1187c7706c5277ed7ce0d
--- /dev/null
+++ b/product/ERP5/PropertySheet/InventoryMovement.py
@@ -0,0 +1,61 @@
+##############################################################################
+#
+# Copyright (c) 2002 Nexedi SARL and Contributors. All Rights Reserved.
+#                    Jean-Paul Smets-Solanes <jp@nexedi.com>
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsability 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
+# garantees and support are strongly adviced to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+##############################################################################
+
+# This has to be chanegd and improved by the new category acquisition tool
+from Products.CMFCore.Expression import Expression
+
+class InventoryMovement:
+  """
+        Properties for InventoryMovement.
+
+        No default value is set in order to allow
+        None inventory values in movements
+
+  """
+
+  _properties = (
+
+    # Inventory
+    { 'id'          : 'inventory',
+      'description' : """The quantity of items in stock after inventory.""",
+      'type'        : 'float',
+      'acquisition_base_category'     : ('delivery',),
+      'acquisition_portal_type'       : Expression('python: portal.getPortalAcquisitionMovementTypeList() + portal.getPortalDeliveryTypeList()'),
+      'acquisition_copy_value'        : 0,
+      'acquisition_mask_value'        : 1,
+      'acquisition_accessor_id'       : 'getInventory',
+      'acquisition_depends'           : None,
+      'mode'        : 'w' },
+    { 'id'          : 'inventory_efficiency',
+      'description' : """The efficiency of the inventory. 1.0 is perfect.""",
+      'type'        : 'float',
+      'default'     : None,
+      'mode'        : 'w' },
+  )
+
+  _categories = ()