The DEDUPREQUIRESBACKUP server option is set to the default value of YES. If the value of this option is YES, files within a deduplicated storage pool must be backed up to a non-deduplicated copy storage pool before the files can be reclaimed.
The operation skips the volume and continues.
Ensure that all files on the volume are backed up to a non-deduplicated copy storage pool. You can change the value of the DEDUPREQUIRESBACKUP server option to NO. However, changing the option value to NO can result in unrecoverable data loss if a data-integrity error occurs.