Hi, When we remove or rename the following it works. "FileInput": new org.jbpm.formModeler.core.fieldTypes.file.FileCustomType(), It happened to me for the email service also. But it worked after I renamed "Fileinput" to another name. From: jbpm-dev-bounces(a)lists.jboss.org [mailto:jbpm-dev-bounces@lists.jboss.org] On Behalf Of Maciej Swiderski Sent: Thursday, July 3, 2014 8:59 PM To: Akila Rathnayake Cc: jBPM Dev List; Michael Anstis Subject: Re: [jbpm-dev] Could not find work item handler for WebService Have you tried with 6.1.0.CR1 to see if that is already solved? Maciej On 2 lip 2014, at 10:36, Akila Rathnayake <akila.senarath@gmail.com<mailto:akila.senarath@gmail.com>> wrote: hi all, i When I run a webservice task in kie workbench 6.0.1 I get the following error message; Process Instances failed to start: [examples.ex4:627 - WS:2] -- Could not find work item handler for WebService Even though I set my CustomWorkItemHandlers.conf to the required workitem handler error still repeats. My CustomWorkItemHandlers.conf as follows; [ "Log": new org.jbpm.process.instance.impl.demo.SystemOutWorkItemHandler(), "WebService": new org.jbpm.process.workitem.webservice.WebServiceWorkItemHandler(ksession), "Rest": new org.jbpm.process.workitem.rest.RESTWorkItemHandler() "Service Task" : new org.jbpm.process.workitem.bpmn2.ServiceTaskHandler(ksession), "FileInput": new org.jbpm.formModeler.core.fieldTypes.file.FileCustomType(), "Service Task" : new org.jbpm.process.workitem.bpmn2.ServiceTaskHandler(ksession) ] and also i gone through redhat bugzill in following link, https://bugzilla.redhat.com/show_bug.cgi?id=1035259 also i did same thing that Kris Verlaenen said in comment 5 guys have you any idea about this error... regards Akila This message (including any attachments) is intended only for the use of the individual or entity to which it is addressed and may contain information that is non-public, proprietary, privileged, confidential, and exempt from disclosure under applicable law or may constitute as attorney work product. If you are not the intended recipient, you are hereby notified that any use, dissemination, distribution, or copying of this communication is strictly prohibited. If you have received this communication in error, notify us immediately by telephone and (i) destroy this message if a facsimile or (ii) delete this message immediately if this is an electronic communication. Thank you.