Hello Bob,
Thanks for your reply. I believe you are correct in that VMC environments do not have access to vSAN. I checked the list of plug-ins in vSphere on VMC and the vSAN plug-in is listed but cannot be removed. There was a message that said the plug-in would not work with the HTML5 interface, so I wonder if that's part of the issue?
Regardless, I've finished my testing with VMC and the SDDC has been removed from the environment. I work for a VMware partner and we've been validating our product which will be available in the VMware Marketplace any day now.
I appreciate you getting back to me!
Best regards,
-JeffH