I solved the negative issue by removing Bahmni Sales Discount addon from OpenERP.
Update
However removing this addon cause the atom feed sync to fail at least from bahmni to openerp Below is the error message
Failed processing event in feed [http://localhost:8050/openmrs/ws/atomfeed/encounter/7] java.lang.RuntimeException: No such external ID currently defined in the system: bahmni_sale_discount.group_default_quantity Traceback (most recent call last): File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/service/wsgi_server.py", line 82, in xmlrpc_return result = openerp.netsvc.dispatch_rpc(service, method, params) File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/netsvc.py", line 295, in dispatch_rpc result = ExportService.getService(service_name).dispatch(method, params) File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/service/web_services.py", line 614, in dispatch res = fn(db, uid, *params) File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/osv/osv.py", line 131, in wrapper return f(self, dbname, *args, **kwargs) File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/osv/osv.py", line 198, in execute res = self.execute_cr(cr, uid, obj, method, *args, **kw) File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/osv/osv.py", line 185, in execute_cr return getattr(object, method)(cr, uid, *args, **kw) File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/addons/bahmni_atom_feed/atom_feed_client.py", line 108, in process_event self.pool.get('order.save.service').create_orders(cr,uid,vals,context) File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/addons/bahmni_atom_feed/order_save_service.py", line 297, in create_orders self._create_sale_order(cr, uid, cus_id, name, unprocessed_non_dispensed_order[0]['custom_shop_id'], unprocessed_non_dispensed_order, care_setting, provider_name, context) File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/addons/bahmni_atom_feed/order_save_service.py", line 163, in _create_sale_order self._process_orders(cr, uid, name, sale_order, orders, order, context=context) File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/addons/bahmni_atom_feed/order_save_service.py", line 143, in _process_orders self._create_sale_order_line(cr, uid, name, sale_order, order, context) File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/addons/bahmni_atom_feed/order_save_service.py", line 23, in _create_sale_order_line self._create_sale_order_line_function(cr, uid, name, sale_order, order, context=context) File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/addons/bahmni_atom_feed/order_save_service.py", line 47, in _create_sale_order_line_function default_quantity_object = self.pool.get('ir.model.data').get_object_reference(cr, uid, 'bahmni_sale_discount', 'group_default_quantity')[1] File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/tools/cache.py", line 18, in lookup r = self.lookup(self2, cr, *args) File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/tools/cache.py", line 46, in lookup value = d[key] = self.method(self2, cr, *args) File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/addons/base/ir/ir_model.py", line 865, in get_object_reference data_id = self._get_id(cr, uid, module, xml_id) File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/tools/cache.py", line 18, in lookup r = self.lookup(self2, cr, *args) File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/tools/cache.py", line 46, in lookup value = d[key] = self.method(self2, cr, *args) File "/usr/lib/python2.6/site-packages/openerp-7.0_20130301_002301-py2.6.egg/openerp/addons/base/ir/ir_model.py", line 858, i