85F

Explanation
The channel path measurement facility (CPMF) is
not available because of a hardware error. Code
Explanation
4
A restart was not attempted either because the restart threshold
was exceeded or because the hardware error was not recoverable.
8
A restart was attempted but was not successful.

System action
The system issues message IRA604I in conjunction
with this system completion code.

System programmer response
Correlate this event to disruptions
in CPMF data collection.  A CPMF restart will be attempted at the
next system IPL.  See further documentation regarding CPMF, see IRACPMB
in z/OS MVS™ Data Areas in z/OS® Internet Library at http://www.ibm.com/systems/z/os/zos/bkserv/.

Source
System resource manager (SRM)