IEA273I TOD CLOCKS DYNAMICALLY ADVANCED TO MAINTAIN ETR SYNCHRONISM.

Explanation
After an External Time Reference (ETR) synchronization
check, the system synchronized the time-of-day (TOD) clocks again.
ETR is the MVS™ generic name for
the IBM® Sysplex Timer (9037) or equivalent.
The
channel path measurement facility (CPMF) stops or enters a restartable
error state.  The system restarts the CPMF.

System action
The system continues processing. Resynchronization
may have created a gap in time stamps.

Source
Timer supervision

Module
IEATESCH

Routing code
Note 13

Descriptor code
4