We dont support customization of the subject line of OnPlus alerts today. Since the effective text space is limited for a subject line, partner consensus so far has been to include and as the most important pieces of information. You will see the device details in the email body.
I will go back to Engg to see if it is possible to make this customizable or if there is an easy way for you to see the affected device in the subject line itself.
Article ID:4018 Monitor Web Services on a Device on Cisco OnPlus Portal
Objective Event Monitors are mainly used to monitor the device in order
to provide notifications to the technicians in a timely manner if there
are any problems with the device perfor...
Article ID:3884 Monitor Duplicate IP on OnPlus100 Objective The
Duplicate IP monitor is one of the event monitors on the OnPlus100
device to check the network performance. Duplicate IP monitor checks
whether more than one device in the network uses the sa...
Article ID:3986 Monitor Host Performance with Internet Contol Message
Protocol (ICMP) for a Device on Cisco OnPlus Portal Objective Event
Monitors are mainly used to monitor the device in order to provide
notifications to the technicians in a timely manne...