The tool “zypper 1.14.4-1.1” shows messages like “File 'repomd.xml' from repository '…' is signed with an unknown key ''. Continue? …” for a while. Now I wonder about the status of further software update possibilities from these installation sources.

Examples:
https://download.opensuse.org/reposi...SE_Tumbleweed/
  • filesystems
  • Printing
  • server:/database