Because you can issue more than one START request for the same data set, and because APPC/MVS might wrap data, you might find multiple START trace entries, but not necessarily a complete record of traces started for this data set. You might need to determine:

• Which entries are the most recent,
• Which entries might have been overwritten, or
• Which traces might have been active previously, but ended before the STOP request was issued.

To determine the completeness of the trace data, look for the STOP entry by searching for the character string “STOP”. This entry indicates the end of the most recent trace entries; any entries following the STOP entry are entries written before wrapping occurred. Also, the STOP entry itself lists all traces for this data set that were active when the STOP request was issued.