z/OS JES3 Initialization and Tuning Reference
SA32-1005-00
DDNAME=
Specifies the name of the DD statement or matches the ddname
on the DYNALLOC statement that defines the spool volume with the defective
track.
JES3JCT is not a valid ddname for this parameter.
CYL=
Specifies a one- to seven-digit hexadecimal value
that identifies the cylinder containing the defective track.
TRK=
Specifies a one- to four-digit hexadecimal value
that identifies the defective track. When specified with more than
one digit, only the low digit can be nonzero.