# Alternative product IDs

Alternative ID mapping allows you to set custom fields to match incoming orders to your product feed.<br>

By default, Channable uses your channel’s unique id per item, but you can set this to use a different or additional field for order matching.

#### When to use it

* Your marketplace uses different product IDs than your webshop
* You need region-specific SKU matching
* You’re migrating from another platform with legacy IDs
* Your products have multiple marketplace listings per item

### How it works

When you import items into Channable, we track the primary identifiers from your main import source (e.g. your webshop, data file) and commonly used alternative identifiers like EAN and SKU codes.

When processing an order, Channable can:

1. Read the identifier received from the marketplace order data
2. Try to match that value against tracked alternate ids (e.g. EAN/GTIN)
3. Create a webshop order line for any matched product.

This lets you process orders even if the marketplace identifier differs from your webshop’s main identifier.

#### What this setting doesn’t do

Alternative ID mapping helps match order items to existing webshop products. It does not:

* ​Change the identifier you send to a marketplace when listing products
* Fix duplicate EAN/SKU values in your webshop catalog
* ​Guarantee order creation when the marketplace sends unknown product identifiers

### Supported marketplaces and ids

Channable currently supports Alternative ID mapping for the following webshops and corresponding identifier fields:

| Platform           | Identifier fields                  |
| ------------------ | ---------------------------------- |
| BigCommerce        | sku, GTIN                          |
| CCVShop            | sku\_number, ean, ean\_number, mpn |
| Lightspeed Eseries | sku                                |
| Lightspeed         | sku, article\_code, ean            |
| Magento            | sku, ean                           |
| MijnWebWinkel      | sku, uuid                          |
| Prestashop         | ean13, GTIN, reference             |
| Shopify            | sku, GTIN                          |
| Shoptrader         | sku, ean                           |
| Shopware           | ean, article\_number               |
| Squarespace        | sku                                |
| WooCommerce        | sku                                |