>>>>> On Sun, 24 Nov 2019, Sergei Trofimovich wrote:

> I've effectively reserved space for 1000 users for each of them:
> - 30000..30999
> - 31000..31000
> and using only 10 of each.

That's inside the UID_MIN..UID_MAX range which should be reserved for
assignment on users' systems. Can't you move them into the range
between 60001 and 65532?

Ulrich