SAP Message RA282 - Entries for individual servers already exist in system &

Diagnosis
You want to monitor a remote system. The alert monitor can monitor thewhole system, or individual application servers. You have chosen tomonitor the individual application servers for that system, although youhave previously chosen to monitor the whole system. This means that youralert monitor will contain information on this system twice.

Procedure
Correct your selection so that you continue to monitor the whole system.