> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tryaeris.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Click tracking

## The click id (`cb_aev`) in detail

`cb_aev` is what ties an order back to the creator who drove it. Handle it in two places:

1. **In the browser** — the tracking script reads `cb_aev` from the URL on arrival and remembers it. You don't do anything here beyond installing the script.
2. **On your server** — store `cb_aev` on the order when the shopper first lands, and send it back as `cb_aev` when you report the order (Step 3). This is what credits the creator when the browser script couldn't fire.

<Warning>
  **Use the same order id on both sides.** The pixel's `transaction_id` (Step 1) and the server call's `merchant_order_id` (Step 3) must be the **same id from your system**. That's how the analytics event and the money event line up to one order. If they differ, you get a dashboard row that never turns into a paid order.
</Warning>

If `cb_aev` is missing (the shopper came directly, not from a creator), the order is still recorded — it just isn't credited to anyone.

***

## Attribution & the cookie window

The rule is the affiliate industry standard: **the last marketing click within 30 days wins.** Once a shopper clicks a creator's link, every purchase they make in the next 30 days is credited to that creator — **including** when they come back later on their own to buy.

The only thing that takes the credit away is a **later click from one of your own paid channels** — your Google/Meta ads, another affiliate network, a paid coupon site. A normal organic or direct return (they googled your brand, typed your URL, opened your app, clicked an email) is **not** a competing click — the creator still gets the credit.

Because we only ever see our own creator click, **you drive the de-duplication** (you can see the shopper's whole journey; we can't). Two ways to do it:

* **Preferred — clear `cb_aev` when your own paid ad wins.** If the shopper returns via your own Google/Meta ad (or another network) and buys, clear the saved `cb_aev` so the order report carries no click id. We never claim it. Do **not** clear it on organic or direct returns.
* **Cleanup — decline after the fact.** If one slips through, `POST /conversions/decline` during your regular purchase-confirmation review and it drops from your invoice.

A click older than the 30-day window simply doesn't count — that order is recorded as a normal sale with no commission. You don't do anything for this.