Updated on Oct 19, 2026
Content
Automatic link: connect products with matching SKU codes
The Link function allows Nembol to recognize and connect the same listing across different sales channels and connect them together.
Once products are linked, Nembol can keep their inventory synchronized across channels and update stock when orders are received or inventory changes.
Please note: Nembol Link is available to all users, including those on the 14-day free trial, regardless of their subscription plan.
Before linking products: requirements
For Nembol to recognize products as the same item, products must have matching information across channels.
Before importing, make sure that:
- SKU codes match
The same product must have the same SKU code on all channels. If SKU codes are different, Nembol cannot identify the products as the same item. - Variations match
Products with variations must have the same variation structure and the same SKU code assigned to each variation. - Product hierarchy matches
The product structure must be identical across channels.
Example:
Channel A: 1 parent product + 2 variations
Channel B: 1 parent product + 2 variations
These products can be linked.
How product linking works
- Connect your first sales channel and configure the import settings. See per channel guide ->
- Import products from this channel.
- Imported products will appear in Nembol with the Imported status.
- Connect your second sales channel and configure the import settings.
- Import products from the second channel.
- Nembol compares the products using SKU codes and automatically links matching products instead of creating duplicates.
Once products are linked, Nembol keeps inventory synchronized across channels.
For example:
- An order received on one channel decreases stock in Nembol.
- The updated stock is then synchronized with the other connected channels.
Please note: The first channel you import products from provides the initial product content in Nembol. Each channel can hold its own title and description, written and optimized from Nembol, and “Push updates to channels” sends each channel its own text.
The exception is a channel you set as your content source: its texts overwrite the main product content and the texts of your other channels. Per-channel titles and descriptions.
How to check if products are Linked?
Linked products appear in the Products tab with multiple channel icons attached.
If products do not link, check that:
- SKU codes are identical.
- Variation SKUs match.
- Product structures are the same.
How to fix products that did not link
If products were imported separately because SKU codes did not match:
- Remove the incorrect products from Nembol.
- Update SKU codes and product structures on your sales channels.
- Import the products again.
Nembol will then recognize and link the matching products.
Alternatively, you can merge the products directly in Nembol with Manual link, without changing anything on your channels.
You can use Nembol Checkup to identify and filter products with duplicate, missing, or inconsistent SKU codes.
Manual link: merge products that do not share a SKU
Automatic linking relies on matching SKU codes. When the same item was listed with different SKUs on different channels, Nembol imports it twice.
Manual link handles exactly that case: you select the products that are really the same item and merge them into one. The result is a single product in Nembol, sharing one stock figure and managed centrally, while each channel keeps its own title and description.
How to merge two products
- In the Products tab, select the products you want to merge. The multi-select bar shows how many you have selected.
- Click Same product.
- The Merge into one product window opens, with each selected product shown as a column headed by the channel it comes from.
- Under Build your master product, choose one source per field: photos, tags, category, price and quantity. Each option shows you the value that product holds, so you can see exactly what you are picking.
- If you would rather not take the stock from either product, use Set a default quantity to enter your own figure.
- Click Merge into one product.
Titles and descriptions are not chosen here, because the merged product keeps each channel’s own title and description. Nothing you have written per channel is lost in a merge.
Matching variations
When the products have variations that do not correspond, you match them yourself: one dropdown per variation. Nembol prefills the matches wherever a SKU or an option value already corresponds, and warns you if the same variation is chosen twice.
Variation matching works with Etsy, Shopify and WooCommerce, and only when the products have the same number of variations. In any other case Nembol explains why the variations cannot be matched.
After the merge, stock is applied to the matched variation on every channel. On Etsy, the variations take their names from Nembol.
What cannot be merged
Manual link does not currently work for two products on the same channel account. If you have three duplicated Etsy listings, you cannot merge them in Nembol. One Etsy listing and one eBay listing with different SKU codes, on the other hand, can be merged.
If your selection contains two products from the same channel account, Nembol refuses the merge and tells you which products caused it, what to do about it, and which products you had selected.
Undoing a merge
A merge can be undone for 30 days. Undoing restores the separate products, their listings, and the text each channel had before the merge.
Merge, preview, undo and variation mapping are also available through Nembol’s public API.