
SKU and barcodesBy Commerce App FoundryLaunched October 9, 2026Updated October 10, 2026
Variant Guard ‑ SKU & Barcode launched on October 9, 2026. Shoplist is watching for its first storefront installs and tracking pricing in the meantime.
Find SKU and barcode problems, then preview safe fixes for missing SKUs before changing products.
Variant Guard scans product variants for missing or duplicate SKUs and barcodes, invalid GTIN checksums, non-standard barcode formats, and zero prices. Filter affected variants and open the source product in Shopify. When a SKU is missing, create a deterministic fix preview before applying any change. Existing SKUs are never replaced by that workflow, and catalog edits made after preview are skipped as conflicts. The app does not generate or certify barcodes.
Every number on this page comes from public storefront scans and the public Shopify App Store listing. If Shoplist shows Variant Guard ‑ SKU & Barcode on a store, it is there.
Read the data methodologyGet alerted on first storefront installs, review spikes, pricing changes, and listing edits.