Unable to find any Authorization information in the HTTP headers

Hello

I am completely new to using SOAPUI. I want to check some of the Requests using this tool.

I have added a new project and added the required wsdl.

But when i try to sybmit request to endpoint Url, i get the response as : Unable to find any Authorization information in the HTTP headers.  Is someone trying to authenticate with a different protocol?

How can i resolve this error?

Thanks

Sujit