FCXxxx446E Incomplete monitor data: nnnnn too small

Explanation
Data from the CP monitor indicates that the information received
is incomplete because either the DCSS is too small or the   SAMPLE
CONFIG size in the DCSS is too small. (Accordingly, nnnnn will
be either 'DCSS' or 'SAMPLE CONFIG'.)

This message is also sent to the maintenance user ID
defined with the FC MAINTID command.

System action
Data will be shown as far as possible, but the information is likely
to be incomplete. Incorrect data may be shown, and the Performance
Toolkit for z/VM could even abend.

User response
Inform the responsible systems programmer that either a larger
monitor segment needs to be defined for the CP monitor data, or that
the SAMPLE CONFIG area size in the monitor segment needs to be increased.
You might also consider disabling some of the monitor domains, users
or devices that are not needed, or enabling only the domains, users
or devices that are needed. (Refer to the MONITOR SAMPLE command in z/VM: CP Commands and Utilities Reference.)