Failed to create a topology object with name NMSHostDependency: (4249487)

Large amount of errors in the foglight server log as below

YYYY-MM-DD HH:MM:SS [Data-3-thread-69] com.quest.nitro.service.topology.TopologyService - Failed to create a topology object with name NMSHostDependency: {dependencyServer=2d6f4d99-d35d-4d3d-8ce3-1787fab9552b, protocol=Lightweight Directory Access Protocol, dependencyClient=5872635b-260a-495d-9043-74e9a24cfbbe}: com.quest.nitro.service.sl.interfaces.topology.TopologyChangeVetoException: The configured limit of 50000 instances of type NMSHostDependency has been reached.

STATUS: NMSI-274 was not considered for any future release.

Workaround 1:

As NMS is configured to send 'All conversations' the topology object reaches the maximum limit very quickly. Turning the filtering option in NMS to 'both known endpoints' and enable filtering in the FMS agent helps.

Please reference Agent Properties here
a. Exclude Dependencies with any endpoint as Switch or Router/IpSLA: Indicates if you want the NMS Agent to report these types of dependencies to Foglight.

b. Excluded Host List: Specifies a list containing the hosts that you do not want the NMS Agent to monitor. If you are specify an IP range, both IP addresses in a range need to be fully qualified. For example, 10.10.1.1-10.10.1.240 represents a valid IP range.

Workaround 2:

Please use the groovy script attached to SOL64596

Go to Foglight UI | Administration |Tooling | Scripts Console | Paste the script to the Script Window and Click Run

Note: The parameters within the script are set as.

def typeName = "NMSHostDependency";
def staleAge = Integer.valueOf(2);