DRAFT KB-XXXX Unable to create envelope error when invoking a Process Model as a Web Service (WSDL)

Symptoms

The following message is seen in the application server log:

XXXX-XX-XX XX:XX:XX,XXX [ajp-/X.X.X.X:XXXX-XX] ERROR com.appiancorp.process.webservices.pmserver.PMServletDelegate - An unknown error occurred while consuming the PM WS for the service: 
com.sun.xml.messaging.saaj.SOAPExceptionImpl: Unable to create envelope from given source: 
	at com.sun.xml.messaging.saaj.soap.EnvelopeFactory.createEnvelope(EnvelopeFactory.java:127)
	at com.sun.xml.messaging.saaj.soap.ver1_1.SOAPPart1_1Impl.createEnvelopeFromSource(SOAPPart1_1Impl.java:83)
	at com.sun.xml.messaging.saaj.soap.SOAPPartImpl.getEnvelope(SOAPPartImpl.java:143)
	at com.sun.xml.messaging.saaj.soap.MessageImpl.getSOAPBody(MessageImpl.java:1366)
	at com.appiancorp.process.webservices.pmserver.PMServletDelegate.doPost(PMServletDelegate.java:107)
	at com.appiancorp.process.webservices.pmserver.PMServletDelegate.handleRequest(PMServletDelegate.java:70)
	at com.appiancorp.process.webservices.pmserver.PMServlet.doGet(PMServlet.java:13)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
Caused by: javax.xml.transform.TransformerException: org.xml.sax.SAXParseException; Premature end of file.
	at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:502)
	at com.sun.xml.messaging.saaj.util.transform.EfficientStreamingTransformer.transform(EfficientStreamingTransformer.java:414)
	at com.sun.xml.messaging.saaj.soap.EnvelopeFactory.createEnvelope(EnvelopeFactory.java:118)
	... 89 more
Caused by: org.xml.sax.SAXParseException; Premature end of file.
	at org.apache.xerces.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1216)
	at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:555)
	at org.xml.sax.helpers.XMLFilterImpl.parse(XMLFilterImpl.java:357)
	at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:485)
	... 91 more

Cause

This message indicates that the application server

Action

Workaround

Affected Versions

This article applies to all versions of Appian.

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