Hi Courtney,Hi Yi,
We don't have an aliased F compset for SSP scenarios. You can use a B compset with CESM2.1. Search for "SSP" on this page: CESM2 Component Sets Definition
You can also specify a compset with the long name, so you can take the longname of a B compset and change out the land model specifications.
Hope that helps,
Courtney