Hi I am using drools guvnor 5.2.1. I am exploring drools decision table option on this. When i am trying to fire the rules from my java code It gives me following error. [9/27/13 11:47:29:499 IST] 00000028 SystemOut O Before firing [9/27/13 11:47:32:226 IST] 00000028 FireRuleTask E com.aexp.travel.rules.service.FireRuleTask fireRule Error in executing rules : com.aexp.travel.rules.RuleEngineException: Error executing rules: at com.aexp.travel.rules.drools.DroolsRuleExecutor.executeRules(DroolsRuleExecutor.java:45) at com.aexp.travel.rules.service.FireRuleTask.fireRule(FireRuleTask.java:55) at com.aexp.travel.rules.service.RuleEngineService.fireOffGDSInclusionRule(RuleEngineService.java:45) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37) at java.lang.reflect.Method.invoke(Method.java:599) at com.sun.xml.ws.api.server.InstanceResolver$1.invoke(InstanceResolver.java:250) at com.sun.xml.ws.server.InvokerTube$2.invoke(InvokerTube.java:150) at com.sun.xml.ws.server.sei.EndpointMethodHandler.invoke(EndpointMethodHandler.java:261) at com.sun.xml.ws.server.sei.SEIInvokerTube.processRequest(SEIInvokerTube.java:100) at com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:641) at com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:600) at com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:585) at com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:482) at com.sun.xml.ws.server.WSEndpointImpl$2.process(WSEndpointImpl.java:314) at com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.handle(HttpAdapter.java:608) at com.sun.xml.ws.transport.http.HttpAdapter.handle(HttpAdapter.java:259) at com.sun.xml.ws.transport.http.servlet.ServletAdapter.invokeAsync(ServletAdapter.java:207) at com.sun.xml.ws.transport.http.servlet.WSServletDelegate.doGet(WSServletDelegate.java:159) at com.sun.xml.ws.transport.http.servlet.WSServletDelegate.doPost(WSServletDelegate.java:194) at com.sun.xml.ws.transport.http.servlet.WSSpringServlet.doPost(WSSpringServlet.java:52) at javax.servlet.http.HttpServlet.service(HttpServlet.java:738) at javax.servlet.http.HttpServlet.service(HttpServlet.java:831) at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1443) at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:790) at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:443) at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:175) at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:91) at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:859) at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1557) at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:173) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:455) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:384) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:272) at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214) at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113) at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165) at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217) at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161) at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138) at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:202) at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:766) at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:896) at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1527) Caused by: org.drools.runtime.rule.ConsequenceException: rule: Row 1 RegionBasedRules at org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1101) at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1029) at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1251) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:737) at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:701) at org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:218) at com.aexp.travel.rules.drools.DroolsRuleExecutor.executeRules(DroolsRuleExecutor.java:42) ... 44 more Caused by: [Error: null pointer or function not found: setErrorRemark] [Near : {... HotelREs.setErrorRemark( "welc ....}] ^ [Line: 1, Column: 1] at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:996) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:368) at org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:140) at org.mvel2.ast.ASTNode.optimize(ASTNode.java:154) at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:110) at org.mvel2.MVELRuntime.execute(MVELRuntime.java:86) at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:122) at org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:115) at org.mvel2.MVEL.executeExpression(MVEL.java:928) at org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:105) at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1091) ... 50 more [9/27/13 11:47:32:320 IST] 00000028 SystemOut O After Firing I am not geting reason for this error. -- View this message in context: http://drools.46999.n3.nabble.com/error-while-firing-rules-from-drools-gu... 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