Hello and welcome to OpenStreetMap!

As you’ve no doubt noticed, edits that you make update the one shared map that everyone sees.

That’s why it’s important that only valid edits are made to the map. I think that it is unlikely that any of the names added in osm.org/changeset/43919625 or osm.org/changeset/43866564 actually exist

If you want to experiment with the editors, you can do so over at http://api06.dev.openstreetmap.org (an exact copy of the main site apart from the map display). If you want to map an imaginery world, http://opengeofiction.net/ might be what you’re looking for.

If you carry on with these sorts of edits you’ll be prevented from updating OpenStreetMap in the future.

Best Regards,

Andy Townsend, on behalf of OpenStreetMap’s Data Working Group