Oracle Message ORA-15288 - disk(s) require disk group attribute string clause

ERRORdisk(s) require disk group attribute string clause
CAUSESome of the disks specified by the command also require the specified disk group attribute to be stated.
ACTIONRetry the command including an ATTRIBUTE clause for the required disk group attribute. Alternatively, omit the disks that require setting the disk group attribue. See the alert log for additional information on the disks that require setting the disk group attribute.