This query only gets the test values for RA, DEC, and SR that the SCS provider gave to USVO database. It is not a query to the Access URL itself. The SCS service is still up and running despite the failure to retrieve these test values. IMHO the failure to retrieve test values should not be a show stopper. Because this failure is not caused by SCS service itself, but by the database service that stores the test values, which is already has a fix on their test server and just needs to clear paperwork to go into production. Once that is fixed, RA=0 DEC=0 SR=1 should not even be invoked.

Despite this explanation, do you want me to modify the logic so it fails anyway?