Scenario -

Create three output files like below -

• dept1 records to file1 and add 2 digit sequence number from 60th byte starting from 1 and increment by 2.
• dept2 records to file2 and add 2 digit sequence number from 60th byte starting from 2 and increment by 2.
• records other than dept1 to file3.

Input File - MATEPK.SORT.INPUT01 - FB file of 80 length

----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
00001     student1           dept1          560
00003     student3           dept2          520
00004     student4           dept1          540
00005     student5           dept2          500
00002     student2           dept3          510
00006     student6           dept3          550
00008     student8           dept1          530
00007     student7           dept3          510
00009     student9           dept2          520
00010     student10          dept2          505

JCL -

----+----1----+----2----+----3----+----4----+----5----+----6----+----7--
//MATEPKD  JOB (123),'MTH',NOTIFY=&SYSUID
//*
//STEP01   EXEC PGM=SORT
//SORTIN   DD DSN=MATEPK.SORT.INPUT01,DISP=SHR 
//OUTPUT1  DD DSN=MATEPK.SORT.OUTPT01,
//             SPACE=(CYL,(1,1),RLSE),DCB=*.SORTIN,
//             DISP=(NEW,CATLG,DELETE)
//OUTPUT2  DD DSN=MATEPK.SORT.OUTPT02,
//             SPACE=(CYL,(1,1),RLSE),DCB=*.SORTIN,
//             DISP=(NEW,CATLG,DELETE)
//OUTPUT3  DD DSN=MATEPK.SORT.OUTPT03,
//             SPACE=(CYL,(1,1),RLSE),DCB=*.SORTIN,
//             DISP=(NEW,CATLG,DELETE)
//SYSOUT   DD SYSOUT=*
//SYSIN    DD *
     SORT FIELDS=(1,5,ZD,A)
     OUTFIL FNAMES=OUTPUT1,INCLUDE=(30,5,CH,EQ,C'dept1'), 
     OUTREC OVERLAY=(60:SEQNUM,2,ZD,START=1,INCR=2)
     OUTFIL FNAMES=OUTPUT2,INCLUDE=(30,5,CH,EQ,C'dept2'),
     OUTREC OVERLAY=(60:SEQNUM,2,ZD,START=2,INCR=2)
     OUTFIL FNAMES=OUTPUT3,OMIT=(30,5,CH,EQ,C'dept1')
/*

Output File: MATEPK.SORT.OUTPT01 - FB file of 80 length

----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
00001     student1           dept1          560            01
00004     student4           dept1          540            03
00008     student8           dept1          530            05

File: MATEPK.SORT.OUTPT02 - FB file of 80 length

----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
00003     student3           dept2          520            02
00005     student5           dept2          500            04
00009     student9           dept2          520            06
00010     student10          dept2          505            08

File: MATEPK.SORT.OUTPT03 - FB file of 80 length

----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
00002     student2           dept3          510
00003     student3           dept2          520
00005     student5           dept2          500
00006     student6           dept3          550
00007     student7           dept3          510
00009     student9           dept2          520
00010     student10          dept2          505

Explaining Solution:

1. SORT FIELDS=(1,5,ZD,A) - sort all outputs in ascending order based on the ZD value from 1 to 5 positions.
2. OUTFIL FNAMES=OUTPUT1,INCLUDE=(30,5,CH,EQ,C'dept1') - All the records marching with "dept1" from the 30th position of length 5 will be copied to output1 file.
3. OUTFIL FNAMES=OUTPUT1,..,OUTREC OVERLAY=(60:SEQNUM,2,ZD,START=1,INCR=2) - generates the sequence number in OUTPUT1 file starts with 1 and increments by 2 every time from 60th byte of length two.
4. OUTFIL FNAMES=OUTPUT2,INCLUDE=(30,5,CH,EQ,C'dept2') - All the records marching with "dept2" from the 30th position of length 5 will be copied to output2 file.
5. OUTFIL FNAMES=OUTPUT2,..,OUTREC OVERLAY=(60:SEQNUM,2,ZD,START=2,INCR=2) - generates the sequence number in OUTPUT2 file starts with 2 and increments by 2 every time from 60th byte of length two.
6. OUTFIL FNAMES=OUTPUT3,OMIT=(30,5,CH,EQ,C'dept1') - All the records marching with "dept1" from the 30th position of length 5 will be ignore and remaining all the records will be copied to output3 file.

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