Finding and Fixing Duplicates

When Nifty detects that a listing is posted more than once on the same marketplace, we mark it as a Duplicate for you to review. Here's how to find and fix them.

Where to find duplicates

Go to the Inventory Manager and click the Duplicates filter in the Filter bar.

Duplicates shows items Nifty suspects might be duplicates based on similar titles or images.

Why duplicates happen

External relists: When you relist using another tool or directly on a marketplace (like eBay's "end and sell similar"), Nifty pulls in the new listing but doesn't know it's the same item as the old one. You end up with two rows — one where the listing is Listed and another where it's Delisted.

Human error: An item is listed twice by a human.

Software error: An item is listed twice by software. This is a known issue on Mercari — when listing via their API, sometimes two listings are created instead of one.

How to fix duplicates

Important: Before fixing duplicates, run a Full Sync so you're working with the latest data. See Sync and Refresh for details.

For each group that Nifty surfaces for your review, you have three main tools:

1. Drag and drop — drag and drop the photos to rearrange the listings as needed.

2. Delist — use the Delist listings button or Item menu to delist all of the listings on a given row. This removes them for sale from the marketplace.

3. Dismiss — once you've addressed the issue (or if there's nothing to address), click Not a duplicate to dismiss the warning. This button removes the group from your view.

Why this matters

Duplicates directly impact Auto-Delisting. If the same item exists on two separate rows, selling it on one marketplace won't trigger delisting on the others — because Nifty doesn't know they're connected.