Client yum update returns no packages marked for update

Issue

• Yum update shows no packages for update even though there are packages show in RHN satellite 5.6 WebGUI.

# yum clean all
Loaded plugins: product-id, rhnplugin, security, subscription-manager, versionlock
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Cleaning repos: RHEL6.6_64
Cleaning up Everything

# yum makecache
Loaded plugins: product-id, rhnplugin, security, subscription-manager, versionlock
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
This system is receiving updates from RHN Classic or RHN Satellite.
RHEL6.6_64                                                                                                        | 1.5 kB     00:00
RHEL6.6_64/group                                                                                                  | 1.1 MB     00:00
RHEL6.6_64/filelists                                                                                              |  33 MB     00:00
RHEL6.6_64/updateinfo                                                                                             | 2.3 MB     00:00
RHEL6.6_64/primary                                                                                                |  19 MB     00:00
RHEL6.6_64/other                                                                                                  | 161 MB     00:02
RHEL6.6_64                                                                                                                   14110/14110
RHEL6.6_64                                                                                                                   14110/14110
RHEL6.6_64                                                                                                                   14110/14110
Metadata Cache Created

# cat /etc/redhat*
Red Hat Enterprise Linux Server release 6.4 (Santiago)

# yum check-update
Loaded plugins: product-id, rhnplugin, security, subscription-manager, versionlock
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
This system is receiving updates from RHN Classic or RHN Satellite.
#

• Satellite GUI is showing client has 200+ packages required update.

• Software Updates Available Critical: 48 Non-Critical: 250 Packages: 208