IEFBR14 is usually used in
JCL for allocating files.
By adding a
DD card with the new file attributes, the step won't do a thing but allocate the new file.
For example, running this job will create the
sequential file 'SOME.SEQ.FILE'
with the record format as
fixed blocked (FB),
logical record length as 80,
block size as 5600 with 8
cylinders as
primary allocation and 1 cylinder as
extended allocation.
//JOBNAME JOB (...)
//ALLOC EXEC PGM=IEFBR14
//FILE DD DISP=(NEW,CATLG,DELETE),
// DSN=SOME.SEQ.FILE,
// DCB=(RECFM=FB,LRECL=80,BLKSIZE=5600,DSORG=PS),
// SPACE=(CYL,(8,1))