For advertisers the updated macro list (or so-called tokens or tags) that allow you to pass in an external system, such as trackers, affiliate programs, systems, statistics, Analytics, etc. detailed information, where the traffic is coming:
[site_id] - id of the site in the system.
[ad_id] - a unique id of the ad.
[camp_id] - id of the advertising campaign.
[bid] - rate, price per click.
[click_id] - unique id of a click.
[country] two - letter country code in ISO 3166-1.
[category] - the category of the website
If You need additional keys, write about it in a support ticket system.