The Keyed File Compare Capture is executed as a standard z/OS batch job. Sample JCL can be found in supplied member SQDDFCDC.
//SQDDFCDC JOB 1,MSGLEVEL=(1,1),MSGCLASS=H,NOTIFY=&SYSUID
//*
//*--------------------------------------------------------------------
//* Execute Keyed File Compare Data Capture Agent - SQDDFCDC
//*--------------------------------------------------------------------
//*
//JOBLIB DD DISP=SHR,DSN=SQDATA.V400.LOADLIB
//*
//SQDDFCDC EXEC PGM=SQDDFCDC,REGION=0M,PARM='DD:SQDPARM'
//SYSPRINT DD SYSOUT=*
//CEEDUMP DD SYSOUT=*
//SQDLOG DD SYSOUT=*
//SQDPARM DD *
OLDDS='CICSTS22.CICS.FILEB' -- OLD FILE NAME -USE SINGLE QUOTES
NEWDS='XICSTS22.CICS.FILEA' -- NEW FILE NAME -USE SINGLE QUOTES
RPTFREQ=1000 -- REPORT FREQUENCY
CMITFREQ=1000 -- MQSERIES COMMIT FREQUENCY
RECALIAS=FILEA -- FILE NAME AS DEFINED IN CICS FCT
OUTURL=zlog:///SQDATA.CICS.LOG1 -- TARGET LOGSTREAM
KEYOFF=1 -- OFFSET OF KEY
KEYLEN=6 -- LENGTH OF KEY