ユーザー作成時に以下のようなメッセージが出る場合、LDAPを使用していなければキャッシュを削除する。

[sss_cache] [sysdb_domain_cache_connect] (0x0010): DB version too old [0.22], expected [0.24] for domain implicit_files!
Higher version of database is expected!
In order to upgrade the database, you must run SSSD.
Removing cache files in /var/lib/sss/db should fix the issue, but note that removing cache files will also remove all of your cached credentials.
Could not open available domains
[sss_cache] [sysdb_domain_cache_connect] (0x0010): DB version too old [0.22], expected [0.24] for domain implicit_files!
Higher version of database is expected!
In order to upgrade the database, you must run SSSD.
Removing cache files in /var/lib/sss/db should fix the issue, but note that removing cache files will also remove all of your cached credentials.
Could not open available domains

以下のコマンドを実行し、キャッシュを削除する。

# rm -f /var/lib/sss/db/*

以上で解決した。