Multiple users, one database - Last invoice number, etc. are global?

[Jeff K. <jt...@ad...>]

I have one sql-ledger database, 'mycompany' and several users set up. I
did this to control module access, and with the thought that eventually,
it might be nice to journal the user making entries/edits as additional
table columns.

I see the 'last numbers' for invoice and PO in user prefs. Are these
global to each database, or will two users in the same company have
number collisions?