These are computer certificates.
On the SMP Server open "mmc.exe"
Add the "certificates" Snap-In.
Select "Computer Account" and "Local Account"
You will find the licenses (Certificates) at Altiris Licensing.
To know exactly which license it is see the details, f.e.: 1.2.36.8187... (should be last of three) in the content you can read the Solution.
Or just check the expiration date.