If you initialize an ISO/ANSI label using EDGINERS, the labels do not frame an empty or null data set as required for interchange. To produce a label symmetry that meets ISO/ANSI standards, at least a minimal open and close sequence must be performed. For example, a volume previously initialized with EDGINERS results in label symmetry when you use the data set utility IEBGENER before the volume leaves the system for interchange, as shown in Figure 1.

  //STEP1   EXEC  PGM=IEBGENER
  //SYSUT1  DD    DUMMY,DCB=(RECFM=F,BLKSIZE=80,LRECL=80)
  //SYSUT2  DD    DSN=DUMMY,UNIT=(tape,,DEFER),LABEL=(,AL),
                  DCB=(RECFM=F,BLKSIZE=80,LRECL=80)
  //SYSIN   DD    DUMMY