ADVM-03924
Failed to create volume snapshot of string because the ACFS compatibility of the file system is lower than the required minimum of string.
Cause
An attempt to create a volume snapshot was rejected because the ACFS file system had not been upgraded to the indicated ACFS compatibility, which is required for that command.
Action
Update the ACFS compatibility to the required level using the 'acfsutil compat set' command and then reissue the original command.