I ended up fixing the issue. Well one of my coworkers who setup the Drools Rules engine had to make some changes to the Drools setup, he had enabled multi-threading. Once he disabled it my rules ran fine. From: rules-users-bounces(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Joe Donnelly Sent: Tuesday, April 24, 2012 4:56 PM To: rules-users(a)lists.jboss.org Subject: [rules-users] 2 Drools Rules in one DRL file and second Rule is not firing. Hi All, I'm new to drools and using 5.2.0 I have 2 test cases I want to run on my test xml files 1. Is the xml node there 2. Does it match XSD data type pattern The XML file contents is loaded into a DTO(which has sub DTOs) and the DTO is passed to the RuleService I created one rule file called F1.drl with 2 rules in it. rule "F1 - Exists" when fact : basicFact() ojb1 : ObjectDTO() from fact.Objects not(String() from ojb1.node1()) then System.out.println("Missing Node Data"); end rule "F1- Pattern Match" when fact : basicFact() ObjectDTO( node1 not matches "^[\\S]{1,100}$") from fact.Objects then System.out.println("Bad Node value"); end test.java has 2 junit test cases @test for TestFailExists.XML @Test for TestFailPattern.XML Regardless of which rule is first the first is only one that fires on the file that it would apply to. I tried commenting out 1 rule and the other works fine and vice versa. I even tried separating the Into separate DRL files which worked as expected. Hopefully someone can shed some light on this for me Thank you for your time, Joe