SKUFix changes one product field at a time across a list of SKUs you paste in: SKU, barcode, inventory, a metafield, or the amounts on a variant. Every job runs in three steps. Preview shows the current and new value per row. Apply writes only the rows that change. The report reconciles what Shopify stored against what you asked for, marking each row confirmed, mismatch, failed or skipped, and exports to CSV. Undo restores previous values, and refuses any row someone else edited since it ran.

• Paste a list of SKUs. No CSV file, no spreadsheet, no column mapping.
• Preview every old and new value before anything is written to your store.
• Row-by-row report: confirmed, mismatch, failed or skipped. Never assumed.
• Undo a job in one click, refusing any row someone else changed meanwhile.
• Duplicate or unknown SKUs are flagged and skipped, never silently guessed.