TransportBindingException: Response code (401) [Unauthorized]

Hello Experts,

I have created an ABAP Provider system with SAP_DEFAULT_PROFILE (WS). The runtime authentication has been set to Technical User and I am able to find my ABAP web service when I ping the system.

When I try to test the service from WS Navigator I get the following error:

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

[Exception]

com.sap.engine.services.webservices.espbase.client.bindings.exceptions.TransportBindingException: Response code (401)

Please provide your valuable inputs.

Thanks & Regards

Gaurang Dayal