# Shop metafields

Shop metafields are custom fields that let you store additional structured information in your Shopify store. Each metafield definition acts as a template that specifies:

* Which part of your store it applies to (for example, product, collection, customer)
* What type of data it can hold (for example, text, number, file, URL)

You can manage shop metafields in the Shopify admin under **Settings > Custom data**.

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## Exporting shop metafields

When you select the **Shop metafields** option in Duplify:

* Metafield definitions are exported from your source store to your destination stores.
* This export focuses on the definitions, not the values stored in them.

To export the values, select the individual shop metafield options for products, collections, customers, orders, or blog posts.

### Example

You might create a product metafield definition called **upsell**:

* **Name**: `upsell`
* **Description**: Upsell products
* **Applies to**: Products

Once defined, you can assign values to this metafield. For example, for a product called “T-shirt”, the upsell value might be “Jeans, Jacket” (the recommended products to upsell).

* **Definition export**: The `upsell` metafield itself is exported when you choose shop metafields.
* **Values export**: The specific upsell links (Jeans, Jacket) are exported when you also select Products.

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## Export events

Duplify tracks export events to determine the size of your store’s export. Each event represents one data item or file. Your plan provides a specific number of monthly export events.

#### Shop metafield export events

* Shop metafield definitions export with unlimited events.
* Values associated with shop metafields still follow the standard export event rules for their respective categories.

For a full overview of how Duplify counts export events, visit our [Export events](#export-events) reference guide.