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

# How to Enable LinkedIn Click ID Tracking

> Enable LinkedIn li_fat_id click ID tracking so Upstack Data can capture the strongest LinkedIn match signal and attribute server-side conversions to ad clicks.

<Tip>
  * Turn on **Enhanced Conversion Tracking** in your LinkedIn Insight Tag settings.
  * LinkedIn appends `li_fat_id` to your landing page URLs on ad clicks.
  * Upstack captures and stores `li_fat_id` automatically and sends it with every conversion event.
  * No URL changes are required — enabling the setting is enough.
</Tip>

<Note>
  **What is `li_fat_id`?**

  `li_fat_id` is LinkedIn's **first-party ad tracking click ID**. When a member clicks your ad, LinkedIn appends `li_fat_id` to your landing page URL. It is the strongest match signal LinkedIn supports — events that carry `li_fat_id` match to campaign data far more reliably than events matched on hashed email or IP alone. Upstack stores the value in a first-party cookie and includes it on every server-side Conversions API event.
</Note>

## Prerequisites

Before you start, you need:

* The **LinkedIn Insight Tag** installed and active on your storefront
* **Campaign Manager** access to your LinkedIn Ads account
* Your LinkedIn destination already configured in Upstack — see [How to configure the LinkedIn destination](/guides/linkedin-ads/how-to-configure-linkedin-destination-in-upstack-data)

## Steps to enable click ID tracking

<Steps>
  <Step title="Sign in to Campaign Manager">
    Sign in to [LinkedIn Campaign Manager](https://www.linkedin.com/campaignmanager/) and select your ad account.
  </Step>

  <Step title="Open the Insight Tag settings">
    Click **Data** → **Signals Manager** and open your **Insight Tag**.
  </Step>

  <Step title="Enable Enhanced Conversion Tracking">
    Turn on **Enhanced Conversion Tracking** (sometimes labeled **First-party ad tracking** or **Enable click ID**).

    <Note>
      This setting authorizes LinkedIn to append the `li_fat_id` parameter to URLs when members click your ads. It does not require any code changes — Upstack reads the parameter automatically.
    </Note>
  </Step>

  <Step title="Save the changes">
    Click **Save**. The setting takes effect for new ad clicks immediately.
  </Step>

  <Step title="Verify the click ID is captured">
    To confirm `li_fat_id` is being captured:

    1. Click one of your LinkedIn ads (or open a landing page URL containing `li_fat_id=...`).
    2. In your browser's developer tools, check that a first-party cookie storing the LinkedIn click ID is set.
    3. Generate a test conversion and confirm match quality improves in **Signals Manager → Signal Diagnostics** over the following days.

    **Example URL after an ad click:**

    ```
    https://yourstore.com/products/widget?li_fat_id=abc123-def456-7890
    ```
  </Step>
</Steps>

## How Upstack captures the click ID

Once Enhanced Conversion Tracking is enabled:

1. **Member clicks ad** → LinkedIn appends `li_fat_id=...` to the landing page URL.
2. **Upstack Pixel loads** → captures `li_fat_id` from the URL and stores it in a first-party cookie.
3. **Visitor converts** → Upstack includes the stored `li_fat_id` with the conversion event.
4. **Event sent to LinkedIn** → LinkedIn matches the conversion to the original ad click for accurate attribution.

## Troubleshooting

### `li_fat_id` not appearing in URLs

If the click ID isn't being appended after clicking an ad:

1. Confirm **Enhanced Conversion Tracking** is saved and enabled on the Insight Tag.
2. Verify the Insight Tag is firing on your landing pages (Upstack fires it alongside server-side events).
3. Allow time — the setting applies to new ad clicks, not historical traffic.

### Match quality not improving

If match quality stays low after enabling click ID tracking:

1. Confirm the **Partner ID** in Upstack matches the Insight Tag's Partner ID.
2. Ensure ads link directly to your storefront so `li_fat_id` lands in the URL (avoid intermediate redirects that strip parameters).
3. Match quality builds over 1–2 weeks as more identified visitors convert.

<Note>
  For a complete walkthrough, see the [LinkedIn onboarding guide](/guides/linkedin-ads/complete-how-to-guide-for-onboarding-linkedin-in-upstack-data).
</Note>