Custon SOAP header and body

We are trying to communicate with a webservice that needs it's communication is a specific way. The message should look like this: ...... .... ..... So I used the custom header and body option which looks like this: Header part{2}{3}{4} Body part: The problem is that Mendix throws errors when calling the webservice (see the stacktrace below). It seems that since the soapenv:Envelope is opened in the header and   is closed in the body that Mendix does not like this. But I wonder if that is the real problem. Combining the two in a seperate string produces a correct string and when it is given to the XML parser on the other side the string is processed normally. So it seems that the string I am building is OK. But why does the webservice action does not like the header and body? And is there a workaround? Regards, Ronald   Error rendering custom message part at com.mendix.integration.webservices.call.messageparts.CustomMessageRequestPart.render(CustomMessageRequestPart.scala:54) at com.mendix.integration.webservices.call.WebserviceCaller.buildSOAPRequestMessage(WebserviceCaller.java:527) at com.mendix.integration.webservices.call.WebserviceCaller.call(WebserviceCaller.java:115) at com.mendix.integration.webservices.WebserviceModuleImpl.callWebservice(WebserviceModuleImpl.java:207) at com.mendix.integration.internal.InternalIntegrationImpl.callWebservice(InternalIntegrationImpl.scala:333) at com.mendix.integration.actions.microflow.WebServiceCallAction.execute(WebServiceCallAction.scala:102) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:47) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:192) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:149) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:49) at com.mendix.core.actionmanagement.CoreAction.doCall(CoreAction.java:260) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:248) at com.mendix.core.actionmanagement.ActionManager$1.execute(ActionManager.java:168) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:36) at com.mendix.core.actionmanagement.ActionManager.executeSync(ActionManager.java:172) at com.mendix.core.component.InternalCore.execute(InternalCore.java:390) at com.mendix.webui.actions.client.ExecuteAction.execute(ExecuteAction.java:144) at com.mendix.webui.requesthandling.ClientRequestHandler$$anonfun$handleRequest$1.apply$mcV$sp(ClientRequestHandler.scala:311) at com.mendix.webui.requesthandling.ClientRequestHandler$$anonfun$handleRequest$1.apply(ClientRequestHandler.scala:301) at com.mendix.webui.requesthandling.ClientRequestHandler$$anonfun$handleRequest$1.apply(ClientRequestHandler.scala:301) at com.mendix.core.session.Worker$$anonfun$receive$3$$anonfun$2$$anon$1.execute(ActionDispatching.scala:143) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:36) at com.mendix.core.session.Worker$$anonfun$receive$3$$anonfun$2.apply(ActionDispatching.scala:145) at scala.util.Try$.apply(Try.scala:192) at com.mendix.core.session.Worker$$anonfun$receive$3.applyOrElse(ActionDispatching.scala:139) at akka.actor.Actor$class.aroundReceive(Actor.scala:465) at com.mendix.core.session.Worker.aroundReceive(ActionDispatching.scala:135) at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516) at akka.actor.ActorCell.invoke(ActorCell.scala:487) at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238) at akka.dispatch.Mailbox.run(Mailbox.scala:220) at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:393) at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) Caused by: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[10,3] Message: The element type "soapenv:Envelope" must be terminated by the matching end-tag "". at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:296) at org.apache.axiom.om.impl.llom.OMElementImpl.getNextOMSibling(OMElementImpl.java:357) at org.apache.axiom.om.impl.traverse.OMChildrenIterator.getNextNode(OMChildrenIterator.java:36) at org.apache.axiom.om.impl.traverse.OMAbstractIterator.hasNext(OMAbstractIterator.java:69) at org.apache.axiom.om.impl.traverse.OMAbstractIterator.remove(OMAbstractIterator.java:92) at org.apache.axiom.om.impl.traverse.OMFilterIterator.remove(OMFilterIterator.java:77) at com.mendix.integration.webservices.call.messageparts.CustomMessageRequestPart.render(CustomMessageRequestPart.scala:48) at com.mendix.integration.webservices.call.WebserviceCaller.buildSOAPRequestMessage(WebserviceCaller.java:527) at com.mendix.integration.webservices.call.WebserviceCaller.call(WebserviceCaller.java:115) at com.mendix.integration.webservices.WebserviceModuleImpl.callWebservice(WebserviceModuleImpl.java:207) at com.mendix.integration.internal.InternalIntegrationImpl.callWebservice(InternalIntegrationImpl.scala:333) at com.mendix.integration.actions.microflow.WebServiceCallAction.execute(WebServiceCallAction.scala:102) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:47) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:192) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:149) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:49) at com.mendix.core.actionmanagement.CoreAction.doCall(CoreAction.java:260) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:248) at com.mendix.core.actionmanagement.ActionManager$1.execute(ActionManager.java:168) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:36) at com.mendix.core.actionmanagement.ActionManager.executeSync(ActionManager.java:172) at com.mendix.core.component.InternalCore.execute(InternalCore.java:390) at com.mendix.webui.actions.client.ExecuteAction.execute(ExecuteAction.java:144) at com.mendix.webui.requesthandling.ClientRequestHandler$$anonfun$handleRequest$1.apply$mcV$sp(ClientRequestHandler.scala:311) at com.mendix.webui.requesthandling.ClientRequestHandler$$anonfun$handleRequest$1.apply(ClientRequestHandler.scala:301) at com.mendix.webui.requesthandling.ClientRequestHandler$$anonfun$handleRequest$1.apply(ClientRequestHandler.scala:301) at com.mendix.core.session.Worker$$anonfun$receive$3$$anonfun$2$$anon$1.execute(ActionDispatching.scala:143) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:36) at com.mendix.core.session.Worker$$anonfun$receive$3$$anonfun$2.apply(ActionDispatching.scala:145) at scala.util.Try$.apply(Try.scala:192) at com.mendix.core.session.Worker$$anonfun$receive$3.applyOrElse(ActionDispatching.scala:139) at akka.actor.Actor$class.aroundReceive(Actor.scala:465) at com.mendix.core.session.Worker.aroundReceive(ActionDispatching.scala:135) at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516) at akka.actor.ActorCell.invoke(ActorCell.scala:487) at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238) at akka.dispatch.Mailbox.run(Mailbox.scala:220) at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:393) at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) Caused by: ParseError at [row,col]:[10,3] Message: The element type "soapenv:Envelope" must be terminated by the matching end-tag "". at com.sun.org.apache.xerces.internal.impl.XMLStreamReaderImpl.next(XMLStreamReaderImpl.java:596) at org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper.next(XMLStreamReaderWrapper.java:225) at org.apache.axiom.util.stax.dialect.SJSXPStreamReaderWrapper.next(SJSXPStreamReaderWrapper.java:138) at org.apache.axiom.om.impl.builder.StAXOMBuilder.parserNext(StAXOMBuilder.java:668) at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:214) at org.apache.axiom.om.impl.llom.OMElementImpl.getNextOMSibling(OMElementImpl.java:357) at org.apache.axiom.om.impl.traverse.OMChildrenIterator.getNextNode(OMChildrenIterator.java:36) at org.apache.axiom.om.impl.traverse.OMAbstractIterator.hasNext(OMAbstractIterator.java:69) at org.apache.axiom.om.impl.traverse.OMAbstractIterator.remove(OMAbstractIterator.java:92) at org.apache.axiom.om.impl.traverse.OMFilterIterator.remove(OMFilterIterator.java:77) at com.mendix.integration.webservices.call.messageparts.CustomMessageRequestPart.render(CustomMessageRequestPart.scala:48) at com.mendix.integration.webservices.call.WebserviceCaller.buildSOAPRequestMessage(WebserviceCaller.java:527) at com.mendix.integration.webservices.call.WebserviceCaller.call(WebserviceCaller.java:115) at com.mendix.integration.webservices.WebserviceModuleImpl.callWebservice(WebserviceModuleImpl.java:207) at com.mendix.integration.internal.InternalIntegrationImpl.callWebservice(InternalIntegrationImpl.scala:333) at com.mendix.integration.actions.microflow.WebServiceCallAction.execute(WebServiceCallAction.scala:102) at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:47) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:192) at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:149) at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:49) at com.mendix.core.actionmanagement.CoreAction.doCall(CoreAction.java:260) at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:248) at com.mendix.core.actionmanagement.ActionManager$1.execute(ActionManager.java:168) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:36) at com.mendix.core.actionmanagement.ActionManager.executeSync(ActionManager.java:172) at com.mendix.core.component.InternalCore.execute(InternalCore.java:390) at com.mendix.webui.actions.client.ExecuteAction.execute(ExecuteAction.java:144) at com.mendix.webui.requesthandling.ClientRequestHandler$$anonfun$handleRequest$1.apply$mcV$sp(ClientRequestHandler.scala:311) at com.mendix.webui.requesthandling.ClientRequestHandler$$anonfun$handleRequest$1.apply(ClientRequestHandler.scala:301) at com.mendix.webui.requesthandling.ClientRequestHandler$$anonfun$handleRequest$1.apply(ClientRequestHandler.scala:301) at com.mendix.core.session.Worker$$anonfun$receive$3$$anonfun$2$$anon$1.execute(ActionDispatching.scala:143) at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:36) at com.mendix.core.session.Worker$$anonfun$receive$3$$anonfun$2.apply(ActionDispatching.scala:145) at scala.util.Try$.apply(Try.scala:192) at com.mendix.core.session.Worker$$anonfun$receive$3.applyOrElse(ActionDispatching.scala:139) at akka.actor.Actor$class.aroundReceive(Actor.scala:465) at com.mendix.core.session.Worker.aroundReceive(ActionDispatching.scala:135) at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516) at akka.actor.ActorCell.invoke(ActorCell.scala:487) at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:238) at akka.dispatch.Mailbox.run(Mailbox.scala:220) at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:393) at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)