This message indicates that the NVRAM (Non-Volatile Random Access Memory) could not be updated with new values. This may be due to invalid values being read from the NVRAM segment or because of a failing NVRAM.
Some brief information on NVRAM is available in chapter 10 of Irix Admin: System Configuration and Operation.
If the problem persists, contact your System Administrator or your service provider.
For information on how to configure or disable System Alerts, click here.