Error during the update of RHEL6.1

[Nicosia Gaetano]

Hi,

I have installed RHEL6.1.
When I try to update, this update is displayed:
RHN support for yum yum-rhn-plugin-0.9.1-26.el6_1.1

If I try to execute this transaction error is displayed:
could not find yum-rhn-plugin-0.9.1-26.el6_1.1

Have You an idea in order to solve this problem ?

Thank You and Best regards.
Gaetano