The service is unavailable because SPARQL Gateway has not been set up. Run Jazz Team Server setup to register this application. If SPARQL Gateway is not running on a Jazz Team Server, configure SPARQL Gateway first and then restart the server.
Explanation
The application is not configured yet.
User response
Run Jazz Team Server setup to register the SPARQL Gateway application. If the application is not running on a Jazz Team Server, configure the application first and then restart the server.