> For the complete documentation index, see [llms.txt](https://help.stockeo.solvenium.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.stockeo.solvenium.com/data-mapping/barcode.md).

# Barcode

Stockeo allows you to update variant barcodes. Barcodes can also be used as an alternative variant identifier when product SKUs are not available in the feed or when SKUs from the feed do not match those in Shopify.

To use barcodes as the variant ID, add the **Barcode** field to the **Data Mapping** section. Then click the gear icon next to the field and enable **Use as variant ID**.

<figure><img src="/files/al7c3aEc3ydSu47OOn8i" alt="Animation showing how to add the Barcode field in Stockeo Data Mapping and enable the “Use as variant ID” option"><figcaption><p>Setting a barcode as an alternative variant ID in Stockeo</p></figcaption></figure>

Once this is done, remove the SKU field from the Data Mapping section.

<figure><img src="/files/ejKYudY3Sst6jp5iosXL" alt="Stockeo Data Mapping section showing the SKU field being removed after setting an alternative variant identifier"><figcaption><p>Removing the SKU field from the Data Mapping section in Stockeo</p></figcaption></figure>

You can also use [metafields](/data-mapping/metafields.md) to identify variants in Shopify.