The Things Network (TTN)

Those settings will enable a link between your TTN V3 account and the platform.

All form values can be found on your TTN account. https://www.thethingsnetwork.org/

From your TTN Account Console:

• Select an application.
• From the left menu, select Integrations > MQTT. You'll find all needed information.

Topics configuration:

• Specification of which device data will be sent to the Platform:
  • Data from all devices in all applications

v3/+/devices/+/up

• Data from all device of the selected application

v3/{username}/devices/+/up

• Data from one device only

v3/{username}/devices/{device id}/up

Reference: The Things Stack