Purchase Trade Condition Configurator Item must use Reference property sheet,...

Purchase Trade Condition Configurator Item must use Reference property sheet, otherwise getter method wont work.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@45065 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Configurator/Document/PurchaseTradeConditionConfiguratorItem.py

@@ -54,6 +54,7 @@ class PurchaseTradeConditionConfiguratorItem(ConfiguratorItemMixin, XMLObject):
                     , PropertySheet.XMLObject
                     , PropertySheet.CategoryCore
                     , PropertySheet.DublinCore
+                    , PropertySheet.Reference
                     )
 
   def build(self, business_configuration):