Systemctl thinks a service file exists that does not

[Cecil Westerhof <cldwesterhof@xxxxxxxxx>]

On debian 12, when Itype:
    systemctl status spam

and giving a tab I get:
    spamassassin-maintenance.service  spamassassin.service
    spamassassin-maintenance.timer    spamd.service

Still:
    systemctl start spamassassin.service

keeps giving not found.

So systemctl thinks there is a spamassassin.service file, but when
starting it does not find it.

I do not find a spamassassin.service file on my system. The other
three I do find.

When using:
    find / -name spamassassin.service

it does not find spamassassin.service.
So why does systemctl think there is a spamassassin.service?
And how do I make it forget it?

--

Cecil Westerhof