[V13] How to add VIA-based hardened repository to VSA

[phs321]

I'm evaluating Veeam 13: Veeam Application Server + Veeam Infrastructure Application and i have issues to use the hardened repository.
Maybe the documentation is wrong, or i understand something wrong. Please help!

In VAS i added as managed server the VIS server and i see the total storage available and VIS shows me the connection to VAS.

When i add the repo, i should chose Linux Hardened Repository?
But there i just get an error message "Unable to use server as it is not a hardened repositoy installation".
Only adding Linux works. Is that fine or do i have

Thanks!