TransportBindingException: Invalid Response code (401). [Unauthorized].

Hello Experts.

I have create an ABAP provider system with SAP_DEFAULT_PROFILE for WS. I have set the runtime authentication as technical user and I am also able to see the web service when I ping the provider system.

When I try to test this web service through WSNAVIGATOR I get the following error message

TransportNindingException: Invalid Response Code (401). Server [http://<server>:<port>/sap/bc/srt/rfc/sap/zwam_get_approver_agent_wsd/400/zwammi_srv_apprv/zwammi_srv_apprv] returned message [Unauthorized]. Http Proxy Info: none

Please provide your valuable inputs.

Thanks & Regards

Gaurang Dayal