SAP PI 7.3 Single stack- Set tracing and logging

Hi experts

We  have configured a SOAP to SOAP sync scenario in SAP PI 7.3  single stack(Java Only).

I have sent some test messages from WSNavigator to PI .

But when i checked  messages in adapter engine, it is showing*"Unable to retrieve payload or you don't have sufficient authorization to view the content" I am able to monitor payloads of Async messages.

How can we set Logging and trace levels in Single stack PI? I couldn't find any options in RWB os NWA.

Thanks,

Dhanish