Hi,
There is a thread (couple of years old) which raised a similar question around exclusion list.
https://community.netapp.com/t5/Data-Backup-and-Recovery-Discussions/SnapCenter-SQL-option-to-ignore-offline-databases/td-p/136120
However, the actual RFE (Request for Enhancement?) has no updates at all.
https://mysupport.netapp.com/NOW/cgi-bin/bol?Type=Detail&Display=1106048
May be worth asking Support?
Thanks!