# Synchronize listings by SKU

> Bulk synchronize untracked listings in Droopify using the SKU as the ASIN of the Amazon product: requirements, steps and possible errors.

Source: https://docs.droopify.co/en/sync-untracked-listings-by-sku
Last updated: 2026-10-16

How to synchronize several untracked listings whose SKU is the Amazon product's ASIN together, with the **Synchronize Products By SKU** popup.

## Before you start

- Each listing's SKU must be the ASIN of the Amazon product, sold in the same region as the listing: Droopify builds the product link from SKU and region. It works with Amazon only.
- Each synchronized listing counts toward the maximum number of products of your plan.
- If the SKU is not an ASIN, use [Synchronize an untracked listing](https://docs.droopify.co/en/sync-untracked-listing) or [Synchronize listings by CSV](https://docs.droopify.co/en/sync-untracked-listings-by-csv).

## Synchronize Products By SKU

1. In the [Untracked Inventory](https://docs.droopify.co/en/untracked-inventory) tick the listings, or use **Select All** to take every listing matching search and filters.
2. In the bottom bar click **Synchronize Listings By SKU**.
3. The popup asks for confirmation and warns: "The SKUs of the untracked products must match the Supplier Product IDs. Otherwise, the synchronization will fail with a "Product not found" error."
4. Click **Synchronize Products By SKU**.

## What happens next

- When the synchronizations are done "The selected untracked products have been synchronized successfully." appears and the table refreshes.
- Synchronized listings move to the [Inventory](https://docs.droopify.co/en/inventory): on eBay, title, description, images, category and item specifics are replaced with the Amazon product's, and price and quantity follow the store settings.
- If some listings fail, the popup stays open with the error message: those stay in the Untracked Inventory.

## Possible errors

| Message | What to do |
|---|---|
| **Some listings were not synchronized (invalid supplier link, plan limit reached or eBay error). The others were synchronized: check the links and try again for the missing ones.** | Check the SKU of the listings left and synchronize them one at a time with the product link |
| **The supplier product URL is not valid. Check the link and try again.** | None of the selected SKUs is a valid ASIN: use the single or CSV synchronization |
| **We could not retrieve product details. It may no longer be available or we could not obtain its information.** | No synchronization succeeded: check that the ASINs exist on Amazon in the listings' region |
| **You have reached the maximum number of products allowed by your plan.** | Free up room or move to a higher plan in [Profile & Billing](https://docs.droopify.co/en/profile-and-billing) |
| **The draft or listing was not found. It may have been deleted: refresh the page and try again.** | No synchronization succeeded because the listings are gone: refresh the page and select them again |
| **The selection is not valid. Select at least one item and try again.** | Select at least one listing |
| **One or more applied filters are not valid. Please reload the page and try again.** | Reload the page, apply the filters again and retry |