BSYR373E Invalid value - The tape stack limit must be numeric.
Explanation
An invalid value was entered in the Tape Stack Limit field.
The tape stack limit controls how many volume offloads will be stacked onto one tape before the next
tape mount is requested.
User response
Calculate approximately how many volume backups will
fit onto one tape. There are performance concerns also. When performing
data set restore from offloaded backups that have been stacked to
tape, there will be a time delay while the tape is forwarded to the
correct location to perform the restore.