Hi Ravi,
Please make sure that Data Services started providing support for the Representational State Transfer (REST) web services architecture in the 4.2 version. Also you need to create an Adapter instance in DS Management Console to communicate with the Web Service.
From SoapUI 4.6 or later it is possible to use a REST web service URL to create the physical WADL file
1. From SoapUI menu select File | New REST Project
2. A window titled New REST Project will open. Enter the URL for the REST webservice and click OK
3. This will create a new project. On the left tree view pane right-click the first node under the project name (one with blue hourglass-like icon).
4. Select Export WADL
This WADL file can then be referenced in the Web Service REST datastore to import the metadata.
Hope this is useful
Regards
Arun Sasi