Zabbix agent via SuSE Manager

Hi there,
I have attached zabbix agent external repository to SuSE Manager with success, get updates and minions install via SuSE Manager for SLES15SP6 minions.
I have configured another repo for SLES12 minions same way, see the packages listed and get updated. But SLES12 minions are unable to register on the software channel on suma server.

I see this msg in the log:
comment: ‘Module function pkg.add_repo_key threw an exception. Exception: Error: HTTP 404: Not Found reading /zabbix-tools/sles/12/x86_64/repodata/repomd.xml.key’

I found this:
/var/cache/rhn/reposync/1/cust_zabbix_agent_sles12/var/cache/zypp/raw/cust_zabbix-agent_sles12/repodata
and in there I find repomd.xml.key
(same thing with the sles15 repository)

Used this as starting point:

and selected SLES12/Agent2.

What can I do to investigate?
Anyone lucky with the SLES12 repo for zabbix agent?
Thanks

Hi there,
got it working, though …
I had a little error in the GPG url of the custom channel - so fixed that, all works fine.
Cheers