Invalid Response Code: (401) Unauthorized.

Hi,

I am calling a WebService from a Adobe Form designed using WebDynpro.

When the Webservice is called an exception is raised and the following message is shown.

"Service call exception; nested exception is: com.sap.engine.services.webservices.jaxrpc.exceptions.InvalidResponseCodeException: Invalid Response Code: (401) Unauthorized"

Anbody has any idea why this exception is raised.

Thanks,

Sameer