In Applications Manager, there is a fixed limit on the total number of monitors a user can add to a managed server. When a user attempts to add a new monitor to a managed server that has reached its limit, a warning message will be displayed on the Add Monitor page.

The default monitor limit for a managed server in Applications Manager is 500.
If a managed server has reached its monitor limit, users can add the new monitor to another managed server. To view other managed servers, go to Admin → Managed Servers, and select the desired managed server.