Troubleshooting when Obtaining the GFTAXTR Output

If you did not obtain the GFTAXTR output, make sure that:

Your SMF input includes types 14 and 15 records.
These 14 and 15 records are for tape, not DASD.
You have type 21 records in your SMF input.
You have type 30 records that correspond to tape mount and open activity.
Tapes were mounted during the period specified for SMF record collection.
You do not have many mismatches in the time frame of records for demounts (21) and records for opens (14/15).
Your SMF records are not altered. They must correspond to the formats in z/OS MVS System Management Facilities (SMF).
Your SMF records have the correct length. If your installation writes its own SMF records, they might have incorrect length. GFTAXTR inspects each record type for a minimum length value. If the length of the record is less than the standard SMF record format, then GFTAXTR will not use the short records. See z/OS MVS System Management Facilities (SMF) for more information.
You did not over-filter and exclude all SMF records.