CHECK_HOSTS_CPU alert in HANA Studio

On checking the alert TAB for a non-production HANA appliance, I came across the following :

"   Monitor CHECK_HOSTS_CPU: Undefined value at position 43 in expression CPU_HOST_RESOURCE_UTILIZATION_IDLE_PERC[] <= THRESHOLD_CHECK_HOSTS_CPU_WARNING_LEVEL_3.   "

It is accompanied by the following :

"  hananode01 runs out of CPU resources! CPU consumption user mode 9%, system mode 0%, wio 0%, idle 21%  "

Is this something I should be worried about ?

The time stamps for this alert coincide with times when initial data load activity was being carried out from a source ECC system.

Has anyone else experienced this alert and if so is there a fix required ?

Thanks

Simon.