Definitions for the Solaris HCL 'Level' field
In the Detail view of a system or component on the HCL, the row that is labeled Level can have one of the following values:
Tabs on the HCL pages enable you to select only Certified hardware, or only Reported to Work hardware. See the HCL Overview for more information.
Oracle provides Oracle Premier Support for Operating Systems for Certified entries or for customers who have an active Solaris Subscription. If you do not have a subscription for Oracle Solaris, please visit the Oracle Premier Support for Operating System page to review the subscriptions available for Oracle and non-Oracle hardware.