Possible Cause: The agents such as nma, ntma, lanz where the trend data is collected do not contain sufficient data.
Explanation: The Health Report Server collects the Health data from predefined agents. These agents collect the history data, but the availability of the requested data depends on how long these agents have been running.
Action: Ensure that sufficient data is available. To check this, view the trend data using the MIB browser or view the Trend View on the NetWare server.