Ran a scenario and received the following message

WARNING: Negative pressures at demand node(s) at 0:00:00 hrs.
WARNING: Pump U7060 open but exceeds maximum flow at 0:00:00 hrs.
WARNING: Pump U7062 open but exceeds maximum flow at 0:00:00 hrs.
WARNING: Pump U7094 open but exceeds maximum flow at 0:00:00 hrs.
WARNING: Pump U7096 open but exceeds maximum flow at 0:00:00 hrs.
WARNING: System unbalanced at 0:00:00 hrs. EXECUTION HALTED.

** Run failed **

** Error: hydraulic simulation failed due to unbalanced error **
Analysis ended Thu Feb 04 09:50:15 2016

How can I tell which nodes have the negative pressure so I know where to look for a problem.