Everyday we run a checkpoint operation to create a consistent system state in case of a rollback.
If your checkpointing fails for a day without a valid one for >24 hours, you receive this alert.
The reason why it fails for checkpointing can be different (a lot!)
You will need to SSH to VDP (As admin if root access is not enabled)
Then run
# cplist
If you do not see any valid checkpoint in the last 24 hours, run "# status.dpn" to see the cause of failure of checkpoint.
Then the err.log under /data01/cur/err.log should have the reason for failure when "grep" by the cp.2018xxxxx ID
Suhas