reference can be missing if an action information is not well configured.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@30189 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/BusinessTemplate.py

@@ -2562,7 +2562,7 @@ class ActionTemplateItem(ObjectTemplateItem):
       if obj is not None:
         action_list = obj.listActions()
         for index in range(len(action_list)):
-          if getattr(action_list[index], key) == value:
+          if getattr(action_list[index], key, None) == value:
             obj.deleteActions(selections=(index,))
             break
       LOG('BusinessTemplate', 100,