z/OS JCL example for „delete a file, if exists. Doesn’t matter if not.

//DELREPT EXEC PGM=IEFBR14
//SYSUT1   DD  DSN=MYUSER.TEST,
//             DISP=(MOD,DELETE,DELETE),SPACE=(1,0)
//SYSPRINT DD  SYSOUT=*
//... next step