How Inventory Sync Works

When an item sells on one channel, FLUF marks it sold everywhere else it is listed. That is what stops you selling the same item twice. This article explains how a sale gets from one marketplace to the others, how long it takes, and what you need to keep running for it to work.

The short version

  1. FLUF notices the sale.
  2. FLUF finds the same item on your other channels.
  3. FLUF marks it sold, or drops the stock, on each of them.
  4. The result is written to Sync History.

Steps 1 to 3 are automatic. What differs by channel is where step 3 runs, and that is the part worth understanding.

1. Check sale detection

FLUF detects sales automatically on connected channels. For Vinted, keep the required app or extension available, or set up sale email forwarding. You can also use Sync Now on Sync History to check your channels.

2. How FLUF matches the item across channels

Anything you crosslisted through FLUF is already linked; nothing to do. For items you listed on more than one channel before joining FLUF, FLUF will link them automatically when possible. If it misses any, use Combine listings to link them by hand.

3. Keep the required device available

Some channels need the extension or app open to complete updates. See connection and ongoing-operation requirements for the distinction.

A Queued sync is waiting to run, not a completed delist. Check Extension Status, open the required Chrome or supported app session, and check Sync History again. If the destination requires the extension or app, its copy can remain live until you open it.

What gets synced

Synced?
Sold out / stock quantityYes
Price, when you edit it in FLUF or from a source channel (see Price Sync)Yes
Photos changed on the channel you imported fromYes, picked up within a day and used for future listings
Title, description, categoryNo. Edit these in FLUF and push the edit to the channels you want
Edits to photos on an existing live listingUse Edit an existing listing; support depends on the channel and the update you select

Variants (size or colour)

Each variant has its own stock. Selling a size M on Depop marks size M sold on your other channels and leaves the other sizes live. Note that Depop only holds one size per listing, so multi-size items are split there.

Sync History

Listings → Sync History shows every sync FLUF attempted, with the channel, the item and the outcome. Use it to:

  • confirm a sale reached every channel;
  • see what is still Queued and which channel it is waiting on;
  • retry anything that failed, one at a time or Retry all failed;
  • mark an item sold by hand if you sold it outside FLUF.

If you want a regular summary of what synced by email, turn on Inventory Sync Summary under email notifications in Settings.

When sync does not happen

  • Channel shows Disconnected: reconnect it on the Channels page. Nothing syncs to a disconnected channel.
  • Queued for hours: an extension channel with nothing to run it. Open Chrome with the extension, or the app.
  • The item was only ever on one channel: there is nothing to sync. Check the item's channel list in Listings before assuming a sale was missed.
  • Listing deleted directly on the marketplace: FLUF cannot mark sold what is no longer there. The row will fail with a not-found error; you can ignore it.
  • Temporary outage on a marketplace: the update is queued and retried automatically once the marketplace is back online.

Flush & re-index

Re-indexing rebuilds FLUF's list of what you have live on a channel. It does not re-download photos or product details. Reach for it when Sync History says an item is not on a channel and you know it is.

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