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1. Stop the Ignition instances for both MQTT Transmission and MQTT Engine 
   
   

2. Add a line similar to the following to the data/ignition.conf file on each Ignition instance replacing the 'XX' with the proper index per the wrapper.java.additional statements. 

   Code Block
   wrapper.java.additional.XX=--add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED

   
   

3. Restart the Ignition instanceinstances

MQTT Transmission

1. Ensure that Alarm Event Enable has been set under the Transmitter Alarm Settings configuration
   
   
2. Ensure that a Disk Backed History Store has been configured and that the Transmitter has been configured under History Settings to use this history store

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