The "rhn_package_manager" command on Red Hat Proxy or "rhnpush" command on Red Hat Satellite server fails with "Error Class Code: 32"

Issue

• The command rhn_package_manager fails with "Error Class Code: 32"
• The rhnpush command fails with "Error Class Code: 32"

# rhnpush --server=satellite.example.com -u satuser -p ******** -c custom-channel-el6 /path/to/custom-package-1.0-0.noarch.rpm
18:05:59 
18:05:59 Error Message:
18:05:59     You are not allowed to perform administrative tasks
18:05:59 Error Class Code: 32
18:05:59 Error Class Info: Channel error
18:05:59 Explanation: 
18:05:59      An error has occurred while processing your request. If this problem
18:05:59      persists please enter a bug report at bugzilla.redhat.com.
18:05:59      If you choose to submit the bug report, please be sure to include
18:05:59      details of what you were trying to do when this error occurred and
18:05:59      details on how to reproduce this problem.
18:05:59 
18:05:59 [RhnPush] - Failed publishing RPMs ...