Red Hat S-JIS Support (for RHEL Server) とはどんなサブスクリプションですか?

Issue

RHEL (プレミアム) や EUS サブスクリプション を利用している環境で、 subscription-manager コマンドで、登録されている結果を確認すると、
" Red Hat S-JIS Support" といったサブスクリプションが確認できます。

このサブスクリプションは何ですか？

RHEL (プレミアム) や EUS サブスクリプションがあれば利用できるのですか？

# subscription-manager  list --consumed
+-------------------------------------------+
   Consumed Subscriptions
+-------------------------------------------+
Subscription Name:   Red Hat Enterprise Linux Server, Premium (Physical or
                     Virtual Nodes)
Provides:            Red Hat CodeReady Linux Builder for x86_64
                     Red Hat Enterprise Linux Atomic Host
                     Red Hat Enterprise Linux Atomic Host Beta
                     Red Hat Developer Tools (for RHEL Server)
                     Red Hat Container Images
                     Red Hat Container Images Beta
                     Red Hat Developer Tools Beta (for RHEL Server)
                     Red Hat Developer Toolset (for RHEL Server)
                     Red Hat Enterprise Linux High Performance Networking (for
                     RHEL Server) - Extended Update Support
                     Red Hat Enterprise Linux for x86_64
                     Red Hat Enterprise Linux Resilient Storage for x86_64 -
                     Extended Update Support
                     dotNET on RHEL (for RHEL Server)
                     Red Hat Enterprise Linux for x86_64 - Extended Update
                     Support
                     Red Hat Enterprise Linux Scalable File System (for RHEL
                     Server) - Extended Update Support
                     dotNET on RHEL Beta (for RHEL Server)
                     Red Hat Beta
                     Red Hat EUCJP Support (for RHEL Server) - Extended Update
                     Support
                     Oracle Java (for RHEL Server)
                     Red Hat Software Collections (for RHEL Server)
                     Oracle Java (for RHEL Server) - Extended Update Support
                     Red Hat CodeReady Linux Builder for x86_64 - Extended
                     Update Support
                     Red Hat S-JIS Support (for RHEL Server) - Extended Update  <-------- 
                     Support
                     Red Hat Software Collections Beta (for RHEL Server)
                     Red Hat Enterprise Linux High Availability for x86_64 -
                     Extended Update Support
                     Red Hat Ansible Engine
                     Red Hat Enterprise Linux Load Balancer (for RHEL Server) -
                     Extended Update Support
                     Red Hat Enterprise Linux Server
SKU:                 RH00003
: