List of Macros / Placeholders available apart from {click_id}

We currently support only two additional macros that we populate on click-out:

-**{gaid}**- google advertising id -**{idfa}**- apple advertising id -**{pub\_id}**- first-level publisher ID -**{sub\_id}**- second-level publisher ID (if available)**Example:**_https://example.com/tracking.php?campaign\_id=XXXX&click\_id=**{click\_id}**&gaid=**{gaid}**&pub\_id=**{pub\_id}**&sub\_id=**{sub\_id}**_

You can use those to assign installs / in-app activity to specific publishers or sub-publishers and thus optimize campaign performance over time by eventually blacklisting non-performing sources.**NOTICE- We have migrated to GitBook:-**[List of Macros / Placeholders available apart from {click\_id}](https://docs.smartxaas.io/cpidroid/advertiser/images-and-media/tracking/list-of-macros-placeholders-available-apart-from-click_id)