What should I do if some product stock levels are not updating?

If certain product stock levels are not updating, check the following common causes:

• Ensure the product identifiers (such as SKU or Product Code) in your store exactly match those in the feed. Missing items or mismatched codes prevent updates. If the supplier changed the identifier format or added leading zeros, update the identifier mapping or use the feed prefix setting so the values match. For example, adding the Feed Prefix 00 under Product Identifier Smart Settings resolved an item whose barcode was present in the feed but absent from the change log.

• Verify field mapping in your feed. If the supplier changes a column name or includes leading zeros in product codes, the feed may not match correctly until the mapping is updated.

• Check for filters or tags applied in the feed settings. Products filtered out (for example missing a required tag) will not update. Also review Vendor, Product Type, and other filters if the quantity in the source file looks correct but the product remains unchanged.

• If you have multiple Shopify locations, remember that each feed updates only one assigned location. If inventory is not updating for a specific warehouse, ensure you have a separate feed configured for that location and that it is mapped to the intended active location rather than another store location. If the selected location is inactive or missing, reselect an active location in the Available Quantity Setting.

• For new products, ensure you are using an Add Product feed. Update feeds only modify existing items.

• Check the sync mode. A real-time feed runs only when a change is detected at the source location, so it will not perform an initial quantity import when the source has not changed. Use a separate supported feed for the initial synchronization, run a Preview Sync first if needed, then disable preview and run the feed again to apply the changes.

• If the feed shows a warning such as Warning - update halt: detected over 80% inventory set to zero, the safety check has stopped the update. Review the zero-quantity alert threshold under Account > Profile > Quantity Zero Alert and increase it only if the source file is expected to contain those zero quantities.

If you fix the mapping or filters, run a test sync or wait for the next scheduled update to confirm that stock starts updating normally. Review the Change Log after the run to verify whether the item was matched and updated.

Updated on: 06/08/2026