[Puppet Users] Error: Could not find dependency Yumrepo[puppetlabs-products] for Package[puppet]

I have installed puppet from puppet-labs yum repository on OEL familiy
of Red Hat Enterprise Linux Server release 5.9 (Tikanga)
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[root@oel-puppet-master modules]# yum list facter
Loaded plugins: rhnplugin, security
This system is not registered with ULN.
You can use up2date --register to register.
ULN support will be disabled.
Installed Packages
facter.x86_64 1:1.7.1-1.el5 installed

Available Packages
facter.noarch 1.6.6-1.el5
  puppetlabs-products
[root@oel-puppet-master modules]# yum list puppet
Loaded plugins: rhnplugin, security
This system is not registered with ULN.
You can use up2date --register to register.
ULN support will be disabled.
Installed Packages
puppet.noarch 3.1.1-1.el5 installed

Available Packages
puppet.noarch 3.2.1-1.el5
puppetlabs-products
[root@oel-puppet-master modules]#
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         package { "puppet":
                 ensure => latest,
                 require => [ Yumrepo["puppetlabs-products"],
Package["facter"] ],
                 notify => Service["puppet"],
         }

         package { "facter":
                 ensure => latest,
                 require => Yumrepo["puppetlabs-products"],
                 notify => Service["puppet"],
         }
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Here is the repofile
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[root@oel-puppet-master modules]# cat /etc/yum.repos.d/puppetlabs.repo
[puppetlabs-products]
name=Puppet Labs Products El 5 - $basearch
baseurl=http://yum.puppetlabs.com/el/5/products/$basearch
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-puppetlabs
enabled=1
gpgcheck=1
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  yum repolist | grep puppetlabs-products
This system is not registered with ULN.
You can use up2date --register to register.
ULN support will be disabled.
puppetlabs-products Puppet Labs Products El 5 - x86_64
   262
[root@oel-puppet-master modules]#
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Could you mind to advise where I am going wrong ...
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