This option is available only in the Advanced Settings (Step 4) of the Update Product feed. The process is not reversible once completed. Please download the export product as a backup to restore.
This feature resets the quantity on the selected location to 0 for UNMATCHED products in the feed.
There are two options for this:
1. Set out of stock to ZERO Quantity
When you enable the toggle, it will enable ALL unmatched variants. So, it will turn ALL unmatched variants from the feed file to zero quantity (out of stock). To ensure that not all the variants become zero, please apply Store Product filters.
For example: 10,000 products in the store and 100 products in the feed file. So, when you enable this option it will change all the 9,900 products become zero quantity. We recommend applying Store Product filters instead of making all the store products that do not match with the feed file become zero quantity.
2. Set out of stock to Zero Quantity that previously updated by this feed (✔️ Shopify only)
When you enable the toggle, it will enable those products that had been updated by the current feed before. So, it will turn ALL unmatched variants that have been updated by the current feed before to zero quantity (out of stock).
If 5,000 products in your store have previously been updated by Stock Sync from the current feed, enabling this option will set the quantity to zero only for products that are unmatched within those 5,000 products. For example, if 200 variants are unmatched out of the 5,000 products, only those 200 variants will have their quantity reset to zero. In short, any product variant that was previously updated by Stock Sync within current feed but is now unmatched will be set to zero quantity. To reduce the number of variants being reset, you can apply Store Product Filters to limit the scope of updates. For instance, applying a filter like Vendor = "Nike" ensures that only Nike products previously updated by Stock Sync will be checked and reset if unmatched.
Related to this above option, there is a feature Quantity zero alert. If you want to get notified of the updates that affected the store products that become zero quantity. You can use this feature to stop the update as you set the percentage. Click here to know more.Updated on: 17/04/2026
