Duplicate SKU: what should I change?
Synthetic example — model draft; no check was run.
Two different products share one SKU. Do not blindly delete rows: you could lose a valid product.
In this synthetic scenario, the product records confirm that Green Mug’s correct, unique SKU is MUG-002. Only that SKU changes; both products, titles and prices stay intact.
For your file, verify the correct SKU against your own product records and confirm it is unique across your catalog. Do not copy the example’s replacement blindly.
Save the corrected CSV, then select it again in the free check and run it once more.
Limits: 2 MB per file; only the first 20 rows are checked. This is not full-file validation or confirmation of a successful import.
SKU,title,price
MUG-001,Blue Mug,12.00
MUG-001,Green Mug,14.00SKU,title,price
MUG-001,Blue Mug,12.00
MUG-002,Green Mug,14.00Check your CSV on heloft.com (opens in a new tab)
Where the numbers come from
- HQ source summary, 24 September 2026: the free check on heloft.com/m01 reads CSV files up to 2 MB, checks the first 20 rows and flags duplicate SKUs