@anon_opin they’re like shipping containers. Duplicates exist around the place but so long as they’re not both in the same place at the same time it doesn’t matter.

@anon_opin four alphanumeric characters seems like a very limited namespace for an entire galaxy. You can’t have more than 1.7 million uniquely-named droids, and that’s ignoring that you have a whole series of droids hogging the Rxxx series.