Explanation/Reference:
svccfg
subcommand: revert [snapshot]
Reverts the administrative customizations of the currently selected instance and its service to those recorded in the named snapshot. If no argument is given, use the currently selected snapshot and deselect it on success.
Incorrect:
Not A: Rollback to as-delivered system: svccfg delcust
svccfg
subcommand: delcust [-M] [pattern]
Delete any administrative customizations for the current selection. If an argument is supplied, it is taken as a glob pattern and only property groups and properties with names that match the argument are deleted.
Not B: There is no command revetsnap
Not C: Run the command /lib/svc/bin/restore_repository, and follow its instructions to restore one of the automatic backup copies of the repository. Upon successful completion, the system or local zone will be rebooted, and the restored repository will take effect.
Not D: