erp5_property_sheets: quantity can be negatif for gross requirement

product/ERP5/bootstrap/erp5_property_sheets/PropertySheetTemplateItem/portal_property_sheets/ProductionOrderLine/total_quantity_constraint.xml

@@ -6,17 +6,26 @@
     </pickle>
     <pickle>
       <dictionary>
+        <item>
+            <key> <string>_identity_criterion</string> </key>
+            <value>
+              <persistent> <string encoding="base64">AAAAAAAAAAI=</string> </persistent>
+            </value>
+        </item>
+        <item>
+            <key> <string>_range_criterion</string> </key>
+            <value>
+              <persistent> <string encoding="base64">AAAAAAAAAAM=</string> </persistent>
+            </value>
+        </item>
         <item>
             <key> <string>description</string> </key>
-            <value> <string>Total Quantity must not be 0</string> </value>
+            <value> <string>Total Quantity must not be 0\n
+</string> </value>
         </item>
         <item>
             <key> <string>expression</string> </key>
-            <value> <string encoding="cdata"><![CDATA[
-
-python: object.getTotalQuantity() > 0
-
-]]></string> </value>
+            <value> <string>python: object.getTotalQuantity() != 0</string> </value>
         </item>
         <item>
             <key> <string>id</string> </key>
@@ -33,4 +42,34 @@ python: object.getTotalQuantity() > 0
       </dictionary>
     </pickle>
   </record>
+  <record id="2" aka="AAAAAAAAAAI=">
+    <pickle>
+      <global name="PersistentMapping" module="Persistence.mapping"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>data</string> </key>
+            <value>
+              <dictionary/>
+            </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
+  <record id="3" aka="AAAAAAAAAAM=">
+    <pickle>
+      <global name="PersistentMapping" module="Persistence.mapping"/>
+    </pickle>
+    <pickle>
+      <dictionary>
+        <item>
+            <key> <string>data</string> </key>
+            <value>
+              <dictionary/>
+            </value>
+        </item>
+      </dictionary>
+    </pickle>
+  </record>
 </ZopeData>