subscription-manager コマンドが失敗し、「NetworkException: Network error code: 400」が表示される

Issue

• subscription-manager コマンドが失敗し、Network error code: 400 が表示されます。

[user@system ~]# subscription-manager list --available --all
Error updating system data on the server, see /var/log/rhsm/rhsm.log for more details.
[ERROR] rhsmcertd-worker:21003:MainThread @rhsmcertd-worker:148 - Error while updating certificates using daemon
[ERROR] rhsmcertd-worker:21003:MainThread @rhsmcertd-worker:150 - Network error code: 400

• yum コマンドが失敗し、Network error code: 400 が表示されます。

# yum repolist
Loaded plugins:  product-id, security, subscription-manager
Network error code: 400
repolist: 0