CQM015E Next interval is not valid because you are currently viewing the current interval.

Explanation
 The NEXT command was requested while viewing the
current interval. Because the interval being viewed is the most current
available, no subsequent intervals can be viewed. 

User response
   No action is required.
 If you would like to view intervals other than the current interval, you can issue the INTV
    command to view the available intervals and select those you want to view from a list.