Storage power supply number alarm is not visible in NMS

[Bustami]

Dear Gurus,

server details : HP DL360 Gen9

Controller  details :  smart array P441  Controller

Enclosure Details : D3700

We are facing a strange problem here!!! we are running some testing on snmp alarms sending towards NMS server. when we remove the storage power supply, alarm is been sent toward NMS system. however, it not showing which power supply is the faulty one. below is the message visible in monitoring system : 

IP:xxxxxxxx,NodeName:xxxxxxxxxxxxx,One of the Storage system power supply status changed to degraded for ControlIndex: 1. HwLocation: Slot 1, BusIndex: 2, SerialNumber: xxxxxxxxxxxxx, Location: Port 1E Box 1

Whereas in the IML logs we can see the alarm properly : "External storage  Enclosure  Power supply failure (power supply2, Box1, Port 1E, Slot2)

Our customer are reluctant to accept this as it seems crucial to them

Can anyone help here??

thanks,