[CentOS] issue with virt-install and CS9 boot iso

I wanted quickly spin up a CS9 system with an virt-install command line that in the past worked with fedora34 and C8 but I am getting following error:

ERROR Error validating install location: Could not find an installable distribution at URL '{trimmed path}CentOS-Stream-9-20211222.0-x86_64-boot.iso'

Some search engines found some sites that are giving examples to pass locations of kernel and initrd. Are the iso files "wrongly" created or are such parameters required now?

Host: CS8

virt-install -n c9x86-parttest -r 3072 --disk path=parttest.img,size=18,format=qcow2 -l CentOS-Stream-9-20211222.0-x86_64-boot.iso --os-variant rhel9.0 --noautoconsole -x "inst.ks=https://example/parttest.cfg"

-- Leon