# Resolve invalid links and duplicates


> Remove invalid import rows or decide whether to import AliExpress products already in your catalog.


Canonical URL: https://www.copyhero.app/help/products/resolve-invalid-duplicates

Clear failed links and review exact catalog matches before confirming an import.

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## Remove invalid links [#remove-invalid-links]

1. Continue to **Review Links** after adding links, a CSV, or a collection.
2. Wait for validation to finish, or select **Continue without waiting**.
3. Use **Remove invalid** to remove all rows marked **Invalid**, or remove a single row from the table.
4. Continue with the rows you want to import. Rows marked **Invalid** are never imported.

## Links marked Not checked [#links-marked-not-checked]

Large lists can take several minutes to check. A row is marked **Not checked**
when CopyHero could not reach the store in time, or when you continue before
the check finishes. These rows are still imported, and a link that turns out
not to be a product fails during import.

To check them again before you import, select **Check again**.

## Handle catalog duplicates [#handle-catalog-duplicates]

For eligible AliExpress links, CopyHero can show **Already in your catalog** when the same source product is already present.

1. Review each matched item; select **View** to open its existing product record.
2. Select **Remove duplicates** to drop matched URLs from this import.
3. Or select **Import anyway** if you intentionally want to continue with them.

The duplicate warning is non-blocking. Shopify-source URLs do not have the same URL-derived duplicate check at import time.

Related: [import product links](/help/products/import-links) and [product details and version history](/help/products/product-details-and-history).