I successfully implemented the in-app billing V3 and it works with my test account. I have two (real) non-consumable items and one I have purchased and discovered the bill in my Google checkout account. In my app the status of the purchased item is "purchased", the second is "not purchased" - as it should be.
Now I would like to reset this item to no purchased. Already refund the money in Google checkout without any change (still purchased).
Or is that not possible?