Chapter 4. Red Hat Network Website 573. Provide the following information:• Description — User-defined description to identify the generated activation key.• Usage Limit — The number of times the key can be used to register a system before theactivation key is disabled. Leave blank for unlimited use.• Base Channel — The primary channel for the key. Selecting nothing will enable you to selectfrom all child channels, although systems can be subscribed to only those that are applicable.Click Create Key.After creating the unique key, it appears in the list of activation keys along with the number of timesit has been used. At this point, you may associate child channels and groups with the key so systemsregistered with it will automatically be subscribed to them.To change information about a key, such as the channels or groups, click its description in the key list,make your modifications in the appropriate tabs, and click the Update Key button. To remove a keyentirely, click the delete key link in the top-right corner of the edit page.If you do not want a key to be used to activate a system, you can disable it by unselecting the corre-sponding checkbox under the Enabled column in the key list. The key can be re-enabled by selectingthe checkbox. After making these changes, click the Update Keys button on the bottom right-handcorner of the page.4.4.8. Stored ProfilesRHN Provisioning customers can create package profiles through the Profiles subtab of the Packagestab within the System Details page. Those profiles end up here, on the Stored Profiles page, wherethey may be edited and even deleted.To edit a profile, click its name in the list, alter its name and description, and click the Update Profile.To view software associated with the profile, click the Packages subtab. To remove the profile entirely,click delete stored profile at the upper-right corner of the page.4.5. ErrataIf you click the Errata tab on the top navigation bar, the Errata category and links appear. The pagesin the Errata category allow you to track and manage Errata Updates.TipIf you want to receive an email when Errata Alerts are issued for your system, go to Your RHN =>Your Preferences and select Receive email notifications.Red Hat releases Errata Alerts in three categories, or types: Security Alerts, Bug Fix Alerts, andEnhancement Alerts. Each Errata Alert is comprised of a summary of the problem and the solution,including the RPM packages required to fix the problem.Icons are used to identify the three types of Errata Alerts:• — Security Updates available, update strongly recommended• — Bug Fix Updates available and recommended