this is delivered in the latest builds.

Created attachment 783373 [details]
Set SLA_Org

VERIFIED :

# rpm -qa | grep katello
katello-selinux-1.4.4-2.el6sat.noarch
katello-candlepin-cert-key-pair-1.0-1.noarch
katello-certs-tools-1.4.2-2.el6sat.noarch
katello-common-1.4.3-5.el6sam_splice.noarch
katello-configure-1.4.4-2.el6sat.noarch
katello-cli-common-1.4.3-4.el6sat.noarch
katello-glue-elasticsearch-1.4.3-5.el6sam_splice.noarch
katello-headpin-all-1.4.3-5.el6sam_splice.noarch
katello-cli-1.4.3-4.el6sat.noarch
katello-glue-candlepin-1.4.3-5.el6sam_splice.noarch
signo-katello-0.0.10-2.el6sat.noarch
katello-headpin-1.4.3-5.el6sam_splice.noarch

# headpin -u admin -p admin org update --name test --servicelevel='Self-support'
Successfully updated organization [ test ]

# headpin -u admin -p admin org info --name test
--------------------------------------------------------------------------------
                            Organization Information
--------------------------------------------------------------------------------

ID                       : 2
Name                     : test
Description:
    
Default Service Level    : Self-support
Available Service Levels:
    Self-support
Default System Info Keys:
    [  ]

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHEA-2013-1390.html