WSDLException: faultCode=OTHER_ERROR

Hi,

We are having problem setting up a Web Service datastore in DS 4.0 and I am hoping someone can help us out.  We want to call the ECC Web Service from Data Services, we have the WSDL URL for the web service that we want to call:

http://<servername>.mgroupnet.com:8000/sap/bc/srt/wsdl/srvc_0050569F001A1EE28285EEA23AF97F46/wsdl11/allinone/ws_policy/document?sap-client=100

We know this URL works because we can call it using SOAPUI and by clicking on the link itself, we have tested this on the server where DS Job Server is installed and from another PC - it works without any problem.  However, when we try to create a Web Service datastore with this URL, we keep getting the error below:

"An error occurred while importing metadata: WSDLException:faultcode=OTHER_ERROR: Unable to resolve imported document at .... java.io.IOException: Server returned HTTP response code: 401"

Has anyone run into this problem before?

Thanks,