Adding ServiceNow PDI instance data source

Hello all,

I am trying to add ServiceNow data source in MF Connect, and couldn't add successfully. Getting authentication error like below:

The server is not responding: com.connect.api.exceptions.syncLifecycle.RestartConnectionException: onSetup failed for dp=b8f51065-5252-4131-97a7-d0414e6c9544, with err=com.connect.api.exceptions.BCException: Server returned HTTP response code: 401 for URL: devxxxx.service-now.com/.../sys_properties {"error":{"detail":"Required to provide Auth information","message":"User Not Authenticated"},"status":"failure"}

The ServiceNow instance that I am using is a Personal Developer Instance (PDI), and I have the ADMIN role by default. If I try to use my login credentials of ServiceNow account to add a DataSource, getting the above error.

Anyone faced similar issues or any ideas would be appreciated.