The GPG keys listed for the "<example>" repository are already installed but they are not correct for this package.Check that the correct key URLs are configured for this repository エラー

Issue

• YUM を使用してパッケージをインストールすると以下のようなエラーが発生して失敗します。

# yum install rhncfg-client.noarch
Loaded plugins: product-id, rhnplugin, security, subscription-manager
[...]
Is this ok [y/N]: y
Downloading Packages:
warning: rpmts_HdrFromFdno:Header V3 RSA/SHA256 Signature, key ID fd431d51:NOKEY
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release


The GPG keys listed for the "channelname" repository are already installed but they are not correct for this package.
Check that the correct key URLs are configured for this repository.