The example in Figure 1 adds the DEBUG DD statement, which creates a data set that contains the message data, as described in DEBUG.
//FTP EXEC PGM=AMAPDUPL
//SENDSTP EXEC PGM=AMAPDUPL
//SYSPRINT DD SYSOUT=*
//DEBUG DD DSN=PDUU.DEBUG,DISP=(,CATLG),
// UNIT=SYSALLDA,SPACE=(CYL,(1,1),RLSE)
//SYSUT1 DD DISP=SHR,DSN=H44IPCS.WESSAMP.TRKS055K
//SYSIN DD *
USERID=anonymous
PASSWORD=anonymous
TARGET_SYS=testcase.boulder.ibm.com
TARGET_DSN=wessamp.bigfile
WORK_DSN=wes.ftpout
WORK_DSN_SIZE=500
DIRECTORY=/toibm/mvs
PMR=12345.123.123
//