I'm a Drools novice but am doing a regular refactor which is causing a problem for our existing rulebase. Before my refactor, I had an interface Itinerary that had a getRules() method. getRules() returned a simple POJO that had a getDestination method. My Drools rule looked like: rule "NZSF Accommodation - With infants" salience 101 activation-group "NZSF Accommodation" when itinerary : Itinerary( rules.destination memberOf travelServicesFeatures.accommodationDestinations ) eval(isOnlineBookingAllowed(itinerary) == false) then TravelService travelService = addTravelService(travelServices, TravelService.Type.ACCOMMODATION); travelService.appendVariant(ResourceType.TEXT, "phone"); travelService.setNull(ResourceType.URL, true); Airport destination = itinerary.getRules().getDestination(); travelService.setArguments(ResourceType.TEXT, new ResourceRefImpl("City." + destination.getCode())); end All was working fine. My refactor is simply to move Rules.getDestination() to the Itinerary interface so I changed my rule to: rule "NZSF Accommodation - With infants" salience 101 activation-group "NZSF Accommodation" when itinerary : Itinerary( destination memberOf travelServicesFeatures.accommodationDestinations ) eval(isOnlineBookingAllowed(itinerary) == false) then ... Now I get: java.lang.RuntimeException: Errors in rules: Not possible to directly access the property 'accommodationDestinations' of declaration 'travelServicesFeatures' since it is not a pattern : [Rule name='NZSF Accommodation - With infants'] Unable to create restriction '[QualifiedIndentifierRestr: memberOf travelServicesFeatures.accommodationDestinations ]' for field 'destination' in the rule 'NZSF Accommodation - With infants' : [Rule name='NZSF Accommodation - With infants'] Any help greatly appreciated! -- View this message in context: http://drools.46999.n3.nabble.com/Not-possible-to-directly-access-the-pro... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users