EAN import

By default, WooCommerce comes with a field for SKU, but not EAN (GTIN). To add the EAN field you can use the "EAN for WooCommerce" plugin. EAN is stored in product meta with _alg_ean key.

Go to External Importer > Settings > Custom fields and set it up like this:

As a result, EANs will be imported into EAN for WooCommerce:

Please note that not all parsers have methods for getting EANs. Custom parsers may be required.