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# What is the process to connect SKUs to stock levels in a feed?

Stock Sync connects SKU records in your store to stock levels in your feed by matching the **exact SKU value**. Once the SKU in the feed matches a SKU in your store, the system updates the product’s inventory based on the **Quantity** field you map in the feed settings.

To ensure correct updates:
• Make sure the SKU in your feed exactly matches the SKU in your store
• Map the correct stock/quantity column under the Quantity field settings
• Use Smart Settings such as “If Empty → 0” when feeds send blank values
• Optionally use “Set out of stock to ZERO Quantity” if missing SKUs should auto‑zero
• Apply Store Product Filters if you need to exclude certain SKU ranges from updates

Once configured, Stock Sync will automatically update your product inventory using the quantity values provided in the feed.