What is the difference between Add feed and Update feed in Stock Sync?

An Add Feed is used to import new products into Shopify. It creates products that do not yet exist in your store. If a product with the same SKU already exists, the Add Feed will skip it.

An Update Feed is used to update existing products in Shopify. It pulls data such as stock, price, or other product fields from your file or source and updates matching SKUs already in your store. It does not create new products.

In short:
• Add Feed = create new products
• Update Feed = update existing products

Additional notes:
• An Add Feed will automatically import new items from your source, such as new nodes in an XML file, as long as their SKUs do not already exist in your store.
• Add Feeds skip existing SKUs and will not update them.
• Update Feeds handle stock, price, and other field updates for existing products and can be scheduled based on your plan. On the Free plan, updates must be run manually; higher plans allow scheduled updates such as hourly.

Updated on: 03/07/2026