post
https://demo.labs.tracefirst.com/api/v2/label_definitions
Creates a new label definition record with the provided attributes.
The payload must include a name and size for the label definition.
Optionally, you can provide a parent label definition ID, color, and specify if the label is selectable.
The active flag indicates whether the label definition is active.
Required Permission: Controller: api_v2_reference_data, Action: label_definitions_create.