satellite tools Error: rhel-*-satellite-tools-*-rpms does not match a valid repository ID

When provisioning a server with the discovery image, i get the error:

Error: rhel--satellite-tools--rpms does not match a valid repository ID
(see:)

It worked before but now it doesnt work anymore. I also didnt upgrade the satellite server.
Even manually registering a server doesnt work.
The repository is added to my content view and visible on the satellite server. (also in /var/lib/pulp)

Any ideas what can de wrong?