Cannot register host to Satellite 6 using Bootstrap.py script

Issue

• Unable to register the host using the bootstrap.py script
• During the procedure of registering the host the below error messages were popped-up

[ERROR], [2016-12-09 08:50:40], EXITING: [/usr/sbin/rhn-migrate-classic-to-rhsm --org <Markets_abC> --activation-key xyz-rhel6-2016-01-01  --destination-url=https://satellite.example.com:443/rhsm --legacy-user 'admin' --legacy-password 'None' --force] failed to execute properly.
Unable to authenticate to legacy server.  See /var/log/rhsm/rhsm.log for more details.

• The other one is because of miss-configuration of the content environment.

[ERROR], [2016-12-13 08:23:53], EXITING: [/usr/bin/yum -y install katello-agent] failed to execute properly.
Loaded plugins: product-id, search-disabled-repos, security, subscription-
              : manager
Setting up Install Process
No package katello-agent available.
Error: Nothing to do