Why "Owns" always "?" in the nodetool status command

I am doing all configs correctly and follow the documentation but when I run nodetool status the Owns value is always ?. What can I do about that?

Datacenter: 168
|/ State=Normal/Leaving/Joining/Moving
--  Address        Load       Tokens       Owns    Host ID                               Rack
UN  761.94 KB  256          ?       2f658dc2-e57a-40f9-a2c4-5d4d8638d587  6

To have an actual value for Owns, you need to provide a keyspace parameter for nodetool status, e.g. nodetool status my_keyspace.

Thank you. I am just newbie on Scylla. But in cassandra it shows owns only with nodetool status