monwriter.fcbea9 Writing monitor data failed with rc=<return code>
Explanation
The monitor stream application device driver used the z/VM diagnose call
DIAG X'DC' to start writing monitor data. z/VM returned an error and the
monitor data cannot be written. If the return code is 5, your z/VM guest
virtual machine is not authorized to write monitor data.
User response
If the return code is 5, ensure that your z/VM guest virtual machine's
entry in the z/VM directory includes the OPTION APPLMON statement.
For other return codes see the section about DIAGNOSE Code X'DC'
in "z/VM CP Programming Services".