MSE some notifications don't arrive to the third party application

Some emergency notifications don't arrive to the third party application

Tag notification frame interval for stationary tag 3-5 minutes
Tag notification frame interval for moving tags <10sec
WLC NMSP aggregation window is 2 sec by default

Correct aggregation window should be set to make sure that WLC has received updates from all the APs, before sending data to MSE via NMSP.

From WLC CLI aggregation window can be set independently for clients, tags, rogue APs, rogue clients and Rfids
(Cisco Controller) >config nmsp notification interval rssi ?
clients Measurement interval for clients.
rfid    Measurement interval for rfid tags.
rogues  Measurement interval for rogue APs and rogue clients

Refer Configuring Link Aggregation for more details