ITM events with CRITICAL severity is seen in the Omnibus Event desktop with severity of Indeterminate.
Resolving the problem
The ITM integration component comes with a updated rule file tivoli_eif.rules to replace the default one the comes with the EIF probe. Please refer to the ITM Installation and Setup Guide under "setting up event forwarding to Netcool/OMNIbus" for more detail on configuring the EIF probe.
Restart the probe after updating the rule file for the changes to take effect.