Webservice error: HTTP header missing

I am trying to call a webservice (salesforce) and am getting the following error: 2009-12-01 11:42:39.395 DEBUG - WEBSERVICES: Called : https://test.salesforce.c om/services/Soap/u/17.0 and received response: <?xml version="1.0" encoding="UTF -8"?><soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" ><soapenv:Body><soapenv:Fault><faultcode>soapenv:Client</faultcode><faultstring> SOAPAction HTTP header missing</faultstring></soapenv:Fault></soapenv:Body></soa penv:Envelope> When copying the XML message from the debugging screen in SoapUI, everything works ok. I'm guessing it has something to do with the transport mechanism and not with the xml messages itself. Any idea on this issue? Thanks in advance
1 answers

Sander, this happens to be a bug in the platform.

The problem is the empty Soap Action defined in the WSDL.

I reported this as a bug in MXDN.