About ad tracking

While creating a new Ad Set it is possible to set up specific tracking which be applied to all Ads that belong to the Ad Set. This is done within the "Advanced settings" panel. You can change the configuration at a later date by accessing the Ad Set -> Ads Tracking option.

This is the most common way to track inbound traffic. Click URL Parameters, (sometimes referred to as UTMs - Urchin Tracking Module), are URL parts that can be appended to the URL of the product or image clicked by the user. Typically, these variables consist of key / value pairs where the key is a piece of ad-identifying information, and the value is the identifier that is assigned to the key. With the UTM system, the key and value bits are connected using an equal (=) sign, and multiple key=value pairs can be chained together with an ampersand (&) symbol. Once grouped, the parameters are appended to the landing page URL.

For example, a typical URL might look like this:

https://www.example.com/mylandingpage.html?utm_source=criteo&utm_medium=display&utm_campaign= my_campaign_name&utm_id={{adsetid}} 

Here, three key=value pairs are set, utm_source=criteo, utm_medium=display, and utm_campaign=my_campaign_name.  
Please note that utm_id={{adsetid}} will be populated automatically with the Ad Set id; it’s needed for better connection of Criteo reporting with any other client's custom reporting.  

Make sure that your URL contains one or more parameters, and that the parameter list always starts with a “?” symbol. Therefore the first parameter in the list will always contain this symbol. Any other additional parameters key/value pairs are added using a “&” symbol. Any other combination (e.g. Starting the parameter's string with a “&” symbol, or having the “?” placed anywhere after the first parameter in the list), is considered to be invalid syntax. This helps to identify and thus better track the source of ad clicks.