Requirements
This topic describes the licensing and software requirements for using the Niagara Abstract MQTT Driver.
License requirements
The abstract abstractMqttDriver module is a licensed feature. You can check to see if your software installation is licensed for MQTT by opening the license file from the License Manager view. The feature name is present only if your platform is licensed for MQTT.

Technical requirements
As of Niagara 4.10u10 and Niagara 4.14.u1, the Abstract MQTT driver applies a default device connection limit of 25 for JACEs and 50 for Supervisors regardless of the corresponding GlobalCapacity licensing limit. This connection limit is required to ensure the performance of the abstract MQTT driver and is configurable for only Supervisors (maximum of 500 connections).
Software requirements
The Niagara Abstract MQTT Driver is available in all the latest versions of Niagara.