iNaturalist:Comma separated list of tracking codes/en

Comma-separated list of tracking codes. Add these if you want to append a tracking code when sending people to the new observation form, e.g. %{root_url}observations/new?project_id=%{project_id}&tracking_code=yourcode123. You can use this to track participation from different sources. You can access these codes when downloading your project's observations as CSV.