*Resettable* seems to be the closest thing I can find, but it doesn't feel that good.

I have a list of three characteristics:

1. **Programmatic** access to data sources
2. **Exclusive** access to testing data when in use
3. Ability to reset testing data to a known state when finished

The third one is obviously the odd one out. It could be

3. **Resettable** to a previously known state

But that doesn't feel right either. Does anyone know of a nice way of saying 'Ability to reset \_\_\_ to a known state' that matches the pattern of the first two?

Or am I worrying about something that doesn't matter and the original third item is the best choice?