Unable to read consumer identity Warning and Solution

I am using yum update command with RHN to upgrade packages installed on my server, but getting unable to read consumer identity warning and solution error on screen :

See Also:

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To resolve the error please follow mention steps.

1. First you need to edit the following files.

[a] /etc/yum/pluginconf.d/subscription-manager.conf 

[b] /etc/yum/pluginconf.d/product-id.conf

Edit the files using text editor.

# vi /etc/yum/pluginconf.d/product-id.conf 
# vim /etc/yum/pluginconf.d/subscription-manager.conf 

Set enabled to 0 from 1 in both files:

[main] 
enabled=0 

2. Clear the yum cache or remove the yum cache directory.

# yum clean all

OR

# rm -rf /var/cache/yum/*

3. Now you can install or update the packages.

# yum install packagename

OR

# yum -y update

Reference:
As per RHEL KB # 165803 root cause for this error was:

When RHN Classic or RHN Satellite is used for updating the system, subscription-manager should be disabled.

Read More: Yum Documentation

Enjoy it!