How it works: Shopify to Meta Conversions API (CAPI)

What you can track

Here's what you can track with Littledata's Meta connection for Shopify.

All the events below are tracked by default. You can turn events off in the settings.

Client-side events

Event name	Description
ViewContent	A visit to a web page such as a product page or landing page
InitiateCheckout *	The start of a checkout process. For example, clicking the Checkout button
AddPaymentInfo *	The addition of customer payment information during a checkout process
Purchase *	Completing the checkout and viewing thank you page

* Only for stores with the Littledata Pixel connected

Server-side events

Event name	Description
AddToCart	The addition of an item to a shopping cart or basket. For example, clicking an Add to Cart button.
InitiateCheckout	The start of a checkout process. For example, clicking the Checkout button.
AddPaymentInfo	The addition of customer payment information during a checkout process. For example, a customer clicks to save their billing information.
Purchase	Completing the checkout and receiving an order confirmation
Post Purchase Upsell	The completion of an upsell purchase, that will contain only the newly added products.
Recurring Purchase	The completion of an automatic recurring purchase, such as a recurring order from Recharge subscriptions.

Note: Remove from cart, view item list and refund events are not officially supported by Meta Conversions API. This is a limitation on Meta's side, not Littledata's.

Lifetime value

For each Purchase and Recurring Purchase event, Littledata sends a parameter named predicted_ltv. This parameter contains the lifetime value of the user. We pull this information directly from Shopify and then make sure that it syncs correctly with Meta.

Profit Signal

If you enable Profit Signal, Littledata adds the estimated profit of each order to the purchase event as net_revenue. The value parameter is not changed and still carries the order revenue, so Meta receives both numbers and you choose which one to optimize for in Ads Manager.

See How to use Profit Signal for how profit is calculated and how to enable it.

New customer vs returning customer conversions

We automatically track four types of Meta conversions. Here's a breakdown of each and how they work:

Conversion Name	What it tracks
Purchase	Every order from any customer is counted, except recurring orders.
New Customer Purchase - Littledata	Counts only the first time a customer purchases on Shopify
Returning Customer Purchase - Littledata	Counts every purchase of a customer, except the first one. This event also includes recurring orders.
First Recurring Purchase - Littledata	Only the first recurring purchase of a subscription customer

The default Purchase conversion will count any purchase event (except recurring orders) and should be the sum* of New Customer Purchase - Littledata and Returning Customer Purchase - Littledata events.

*Returning Customer Purchase - Littledata will include recurring orders as well, so total Purchase numbers might differ if your store runs subscriptions.

How Littledata improves the event match quality score

Littledata is sending all the parameters needed by Meta to perfectly match the events. Our Conversions API integration follows Meta's hashing requirements, ensuring that all parameters are received and processed to increase the event match quality.

The most important parameters are the user parameters. If an event does not have at least one user parameter, Meta will not accept said event.

Here are all the customer parameters that Meta uses.

Littledata sends all the parameters with the exception of:

• external_id (any unique ID from the advertiser)

• fb_login_id (the ID issued by Meta when a person first logs into an instance of an app)

• lead_id (the ID associated with a lead generated by Meta's Lead Ads)

• ge (gender parameter)

• db (date of birth)

Action_source parameter

The action_source parameter is an indicator of where the conversion was made. Knowing this is a great way to ensure your ads are targeted in the right direction.

Littledata can send this parameter with only 3 values:

Value	Source
website	Online Store
system_generated	Subscription App
physical_store	POS Order

Fbp and fbc parameters

The most important parameters that we send are fbp and fbc cookies, which are the equivalent of the Google client ID. These parameters are vital in the event match quality score. Our server-side tracking technology ensures that these parameters are always available to ensure the highest event match quality.

User agent and IP address

User agent and IP address are automatically added to the browser events, but we pass them to the server-side events as well so the event match quality can increase.

Besides fbp, fbc, user agent and IP address, there are other parameters that we send:

• em - email of the user (hashed)

• ph - phone number of the user (hashed)

• fn - first name (hashed)

• ln - last name (hashed)

• ct - City (hashed)

• st - State (hashed)

• zp - zip code (hashed)

• country - Country of the user (hashed)

• subscription_id - sent with a recurring order

All of these parameters are passed from the browser to the server so that the right user is attributed to the event.

For a more detailed schema and parameters, reach out to [e-mail].

Custom parameters

The following parameters are included with every event sent to Meta.

Parameter	Description
market_handle	The handle of the Shopify Market for this event. Fixed as unassigned\_market for orders not attributed to a market.
market_id	The internal Shopify Market ID for this event. Fixed as 0 for orders not attributed to a market.

Market parameters in Littledata events

All events sent to Meta include the Shopify Market handle by default. This allows you to break down ad performance by Shopify market in Meta's reporting, build market-specific Custom Audiences for retargeting, and allocate budgets more effectively across regions. For example, you can create separate audiences for customers from different markets, or exclude certain markets from campaigns entirely. This requires Shopify Markets to be active on your store, but does not require any per-market destination configuration within Littledata.