Comment # 1 on bug 958151 from Thomas Blume

(In reply to Ludwig Nussel from comment #0)
> systemd ships several files in /usr/lib/sysusers.d. The information there is
> not consistent with our defaults in aaa_base though. So please either
> 
> - make them consistent and ensure they stay consistent, or
> - remove them

Hm, I'd assume that aaa_base gets installed before systemd. So there should be
no collision as described in the sysusers.d manpage:

-->--
IDEMPOTENCE
Note that systemd-sysusers will do nothing if the specified users or groups
already exist, so normally there no reason to override sysusers.d vendor
configuration, except to block certain users or groups from being created.
--<--

What is the exact sysuser setting where you saw a problem?