SAXException while commenting

Problem

While adding a comment in JIRA, one that is meant to be added to the OTRS Ticket as well, an exception is listed in the JIRA logfile:

2014-10-02 13:53:19,062 pool-15-thread-1 ERROR admin 833x1179x1 m2vgdr 192.168.2.50 /rest/api/2/issue/OTRS-1/comment [apache.axis.client.Call] Exception:
org.xml.sax.SAXException: Invalid element in de.catworkx.otrs.client.genericAgent.OTRS_TicketUpdateResponse - ArticleID
        at org.apache.axis.encoding.ser.BeanDeserializer.onStartChild(BeanDeserializer.java:258)
        at org.apache.axis.encoding.DeserializationContext.startElement(DeserializationContext.java:1035)
        at org.apache.axis.message.SAX2EventRecorder.replay(SAX2EventRecorder.java:165)
        at org.apache.axis.message.MessageElement.publishToHandler(MessageElement.java:1141)
        at org.apache.axis.message.RPCElement.deserialize(RPCElement.java:236)
        at org.apache.axis.message.RPCElement.getParams(RPCElement.java:384)
        at org.apache.axis.client.Call.invoke(Call.java:2467)
        at org.apache.axis.client.Call.invoke(Call.java:2366)
        at org.apache.axis.client.Call.invoke(Call.java:1812)
        at de.catworkx.otrs.client.genericAgent.GenericTicketConnector_ServiceStub.ticketUpdate(GenericTicketConnector_ServiceStub.java:390)
        at de.catworkx.jira.plugins.otrs.util.OTRSCreateAndUpdateTicket$1.call(OTRSCreateAndUpdateTicket.java:288)
        at de.catworkx.jira.plugins.otrs.util.OTRSCreateAndUpdateTicket$1.call(OTRSCreateAndUpdateTicket.java:286)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
2014-10-02 13:53:19,064 http-bio-8080-exec-12 FATAL admin 833x1179x1 m2vgdr 192.168.2.50 /rest/api/2/issue/OTRS-1/comment [plugins.otrs.util.OTRSCreateAndUpdateTicket] updateOtrsTicketInternal: ExecutionException: could not notify otrs @ http://cat-pc-050.catworkx.de/otrs
java.util.concurrent.ExecutionException: org.xml.sax.SAXException: Invalid element in de.catworkx.otrs.client.genericAgent.OTRS_TicketUpdateResponse - ArticleID
        at java.util.concurrent.FutureTask.report(FutureTask.java:122)
        at java.util.concurrent.FutureTask.get(FutureTask.java:206)
        at de.catworkx.jira.plugins.otrs.util.OTRSCreateAndUpdateTicket.updateOtrsTicketInternal(OTRSCreateAndUpdateTicket.java:296)
[...]

Solution

This error can be ignored since:
  1. It occurs only due to a bug in the Webserivce provided by OTRS AG that does not reflect their own WSDL.
  2. Even though an error is reported, the comment is successfully added to the OTRS Ticket.