Trying to make sense of what I have vs what I need.

I want to get GMS linux setup. I purchased Open Workgroup with
Maintenance so I am entitled to GMS - but OW appears to just give me
SLED and OES. But when I look at GMS, it looks like I need SLES. Can
I just download SLES and set it up for GMS? Or do I need to purchase

Ken does a server good!