The Sandbox DB is active again, and you should see most of your
Sandbox requests (either v13 or the new v200902) go through.
However, there does appear to be a lingering issue with creating
criteria in the Sandbox that I've asked the core engineering team to
investigate further. I'll post again when that's resolved.
-Jeff Posnick, AdWords API Team
On Apr 29, 10:56 am, AdWords API Advisor