When you create an AdRoll account, the system automatically generates a unique AdRoll pixel. AdRoll ID consists of two parts: Advertiser ID (adroll_adv_id) and Pixel ID (adroll_pix_id). To use AdRoll Pixel, you need to combine these two components by separating them with a slash (/).

e.g. adroll_adv_id/adroll_pix_id