The "item-fields" plugin type is used to add static fields to the designated devices and/or to store custom data associated with the device and reference it in REST API calls.
Click on the "+" button in the Telematics Hub -> Plugins section to create a new plugin:
Let's define a new plugin for devices that will add a customer_id field that is a positive integer and a required field:
Note: by default, the plugin fields will be added and stored in the message and telemetry (edit the "store" setting to change that behavior).
Then we need to assign this plugin to the right devices. Go to the Plugins tab for the required device and click the "+" button:
And then you should be able to see the new field in the new device messages. Go to the Logs & Messages tab for the given device to check:
New! Independently of the "store" configuration option value, you may now reference plugin fields values to address a specific device in REST API calls, for example GET /gw/devices/plugins.fields.customer_id=12345/messages to fetch its messages.
Subscribe to the item fields plugin change log to stay in sync with any updates.
More plugin types
Find a comprehensive list of available plugins types here.