> ## Documentation Index
> Fetch the complete documentation index at: https://sailia-mintlify-5b02008a.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Connecting Google Analytics

> Step-by-step setup for connecting Google Analytics 4, Google Tag Manager, and Meta Pixel to your Sailia booking page.

Sailia automatically fires GA4-format e-commerce events from your booking page (see [booking tracking events](/integrations/booking-tracking) for the full list). This guide walks you through the one-time setup to actually receive those events in Google Analytics 4 via Google Tag Manager.

If you only want to know which events Sailia fires, see the [booking tracking reference](/integrations/booking-tracking).

## What you'll need

Before you start, make sure you have:

* A free [Google Tag Manager](https://tagmanager.google.com/) container
* A [Google Analytics 4](https://analytics.google.com/) property
* Your **GA4 Measurement ID** (looks like `G-XXXXXXXXXX`)
* Your **GTM Container ID** (looks like `GTM-XXXXXXX`)
* Access to your Sailia admin settings
* Optional: a [Meta Business Manager](https://business.facebook.com/) account if you also want Facebook/Instagram Pixel tracking

## 1. Add your GTM container to Sailia

In Sailia, go to **Admin → Settings → Business Details** and add:

* Your **GTM Container ID**
* Your **Website URL**

Sailia uses this to load your GTM container on customer-facing booking pages. It also helps GA4 understand that customers moving from your main website to Sailia are part of the same session.

## 2. Create your Google tag in GTM

Open Google Tag Manager and select your container.

<Steps>
  <Step title="Create a new tag">
    Go to **Tags → New** and choose **Google Tag**.
  </Step>

  <Step title="Set the Tag ID">
    Enter your GA4 Measurement ID (`G-XXXXXXXXXX`).
  </Step>

  <Step title="Trigger on all pages">
    Set the trigger to **All Pages**.
  </Step>

  <Step title="Name and save">
    Name it `Google Tag - GA4` and save.
  </Step>
</Steps>

## 3. Create the GA4 event tag

This tag forwards Sailia's e-commerce events into GA4.

<Steps>
  <Step title="Create a new tag">
    Go to **Tags → New** and choose **Google Analytics: GA4 Event** (may appear as "Google Analytics event" in newer GTM accounts).
  </Step>

  <Step title="Configure the tag">
    | Field               | Value                         |
    | ------------------- | ----------------------------- |
    | Event name          | `{{Event}}`                   |
    | Google Tag          | The tag you created in step 2 |
    | Send Ecommerce data | Enabled                       |
    | Data source         | Data Layer                    |
  </Step>

  <Step title="Name and save">
    Name it `Sailia GA4 Ecommerce Events`. You'll attach a trigger next.
  </Step>
</Steps>

## 4. Create the trigger

<Steps>
  <Step title="Create a new trigger">
    Go to **Triggers → New** and choose **Custom Event**.
  </Step>

  <Step title="Set the event name">
    Use this regex:

    ```
    ^(view_item_list|view_item|add_to_cart|begin_checkout|add_payment_info|purchase)$
    ```

    Enable **Use regex matching**, and set it to fire on **All Custom Events**.
  </Step>

  <Step title="Attach to the tag">
    Name it `Sailia GA4 Ecommerce Events` and attach it to the GA4 Event tag from step 3.
  </Step>
</Steps>

## 5. Test in GTM Preview mode

Before publishing:

1. In GTM, click **Preview** and open your Sailia booking page.
2. Complete a test booking through to the payment success page.
3. In Tag Assistant, you should see events fire: `view_item_list`, `view_item`, `begin_checkout`, `add_payment_info`, and finally `purchase`.
4. Click the `purchase` event. Under **Tags Fired** you should see `Sailia GA4 Ecommerce Events`.
5. Check the **Data Layer** tab — you should see values like `basket_uuid`, `basket_value`, `basket_currency`, and `ecommerce.transaction_id`.

If you see those, your tracking is working.

## 6. Publish your container

Once testing looks correct, click **Submit** in GTM, add a version name like `Add Sailia GA4 booking and purchase tracking`, and publish. Events won't be sent live until the container is published.

## 7. Mark purchase as a key event in GA4

In GA4, go to **Admin → Events**. Once GA4 has received a `purchase` event, find it in the list and enable **Mark as key event**. This makes purchases count as conversions.

You can also mark `add_to_cart`, `begin_checkout`, and `add_payment_info` as funnel events if you want them in GA4's funnel exploration reports — but usually only `purchase` should be the main key event.

## 8. Confirm in GA4

GA4's standard reports lag by up to 24 hours. For immediate verification:

* **Reports → Realtime** — see live events as they fire
* **Admin → DebugView** — see the full data layer payload for each event

If `purchase` appears under key events, the integration is live.

## What Sailia sends

For the `purchase` event, Sailia pushes order-level data into GTM and GA4:

```json theme={null}
{
  "event": "purchase",
  "sailia_event": "booking_completed",
  "basket_uuid": "bas_abc123",
  "basket_value": 395,
  "basket_currency": "GBP",
  "basket_coupon": "SUMMER10",
  "basket_payment_method": "CARD",
  "ecommerce": {
    "transaction_id": "bas_abc123",
    "value": 395,
    "currency": "GBP",
    "tax": 25.88,
    "coupon": "SUMMER10"
  }
}
```

The integration is **order-level** — individual line items aren't sent to GA4. For deeper analysis, use Sailia's [financial exports](/payments/reporting).

## Cross-domain tracking (recommended)

To keep attribution connected between your website and Sailia, configure your domains in GA4:

**GA4 → Admin → Data streams → Web stream → Configure tag settings → Configure your domains**

Add your main website domain and your Sailia subdomain:

```
yourwebsite.com
yourbusiness.sailia.com
```

Don't include `https://`. This stops GA4 treating Sailia as a referral and breaking session attribution.

## Using the data for other tags

Because Sailia pushes friendly top-level values into the data layer, you can reuse them for other marketing tags.

For example, **Google Ads conversion tracking**:

| Field            | Value                 |
| ---------------- | --------------------- |
| Conversion value | `{{basket_value}}`    |
| Currency         | `{{basket_currency}}` |
| Transaction ID   | `{{basket_uuid}}`     |

Or **Meta Pixel Purchase**:

| Field    | Value                 |
| -------- | --------------------- |
| Value    | `{{basket_value}}`    |
| Currency | `{{basket_currency}}` |

Fire these tags on the same custom event trigger (`purchase`).

## Troubleshooting

**Sailia is pushing events, but GA4 isn't showing them.** In GTM Preview, click the `purchase` event. If you see the data layer payload but no GA4 tag fired, check that:

* The GA4 Event tag exists
* The trigger is a Custom Event trigger
* Regex matching is enabled
* The regex is exactly the string above
* The GA4 Event tag uses `{{Event}}` as the event name

**The tag fires, but GA4 reports are empty.** GA4's standard reports lag. Use **Reports → Realtime** or **Admin → DebugView**. Also confirm you're looking at the same GA4 property as the Measurement ID in GTM.

**`gtm.init` appears as an event in GA4.** The GA4 Event tag is firing too broadly. Make sure it only fires on the Sailia custom event trigger, not on "All Pages", "All Events", "Initialization", or "Container Loaded".

**Purchase isn't a key event option.** GA4 can't mark an event as a key event until it has received that event at least once. Make a test purchase, wait for `purchase` to appear in GA4, then mark it.

## Related guides

<Columns cols={2}>
  <Card title="Booking tracking events" icon="chart-line" href="/integrations/booking-tracking">
    The full list of events Sailia fires.
  </Card>

  <Card title="Embedding" icon="code" href="/getting-started/embedding">
    How to add Sailia to your website.
  </Card>
</Columns>