30 May‘25
When syncing Amazon listings with the e-commerce store, some sellers might have some new items to list in the process. Today, we will take a look at a Salestio use case when some of the products already exist on the Seller Central account, while others need to be published.
For example, your winter collection of clothes is up for sale both on Shopify and Amazon, but you have not had the chance to list the summer collection on the marketplace yet. We will see how to list the summer collection in this case and sync the whole stock together.
Add all products to a Selling List
Salestio organizes the items in Selling Lists, so we need to add at least one and fill it with the products that we will use. You might want to add multiple Selling Lists to organize the products into different groups and use separate customized sync rules for each of them.
Detailed steps: Create New Selling List [Amazon]
Important: when enabling Collection mode, avoid using the “Send products automatically” option. To link items in future steps, products have to stay in the default Not Active status. You can enable this option after the products are linked in the subsequent steps.
After creating the Selling List, add all the desired items using the buttons at the top: “Add product by collections” to select in bulk or “Add products” to select individual items. If you selected Collection/Category mode earlier, wait a few minutes while Salestio fetches the items to populate the list.
Link the existing listings
Now it is time to link the items that have been selling on Amazon. Go to Salestio > Inventory tab and click “Download inventories”. In a few minutes, Salestio will report a list of the products found on the connected marketplace account.
Full guide: Connect Shopify to existing Amazon listings with Salestio
Store items need to have the same SKU as Seller Central items to connect. If the SKUs are different, consider setting up an SKU mapping to resolve the conflicts.
When ready, click “Sync inventories with selling products”. Give the app some time to process all items. All matching items in our Selling List will have a Linked status. Now you can go back to the Selling List to verify how the process completed.
We suggest doing an initial synchronization of quantities and prices now: select the Selling List and run the “Update QTY & Price” action to sync up the differences. When store prices or quantities change, Salestio will automatically update the Amazon items.
If some of the matching items weren’t added to our Selling Lists, Salestio will create an additional list automatically. When this is the case, you will see a Selling List called “Migrated for *account_name*”.
To send new products to Amazon, you will still need to add the Selling Lists. If you use the Collection mode and some of the products are already added to the “Migrated” Selling List, these products will be skipped from adding to new Selling Lists.
Check the link results
Salestio offers a simple way to form a report of all marketplace items and their status. Try the steps below:
- Go to the Inventory tab in Salestio and click “Download inventories” to get the updated inventory list.
- Enable the checkbox to remove existing items from the list.
- After the item list is updated, click “Download report” to get the file
Full guide: Use Synchronization Report in Salestio
In the downloaded report, you can check if all Amazon items are linked or if some are missing. We suggest reviewing this list to ensure that every marketplace listing is connected.
Send the rest of the items to Amazon
We still have some items that were not connected. If Salestio did not find a match for an item in your Selling List when you connected existing products, it will remain in the “Not Linked” status.
To send the items, select the Selling Lists and run the “Send to Amazon” action. As another option, select individual items and run the same action. Give the app 10-30 minutes to process the changes and check the results.
After the items are sent, their status will change to Linked. At this point, the item is synced, and Salestio will keep it updated.
Check the Selling Lists for errors in case something went wrong. To learn more about the error, click “Logs” and look for the error messages. Resolve the mentioned errors and try sending the products again.
Full guide:
List on Amazon: Common errors and how to fix them
Configure a Creation Profile
This step is necessary when some of the items are not yet in the Amazon catalog.
If you are sending a new product without a Creation Profile, but the product does not exist on the marketplace, a respective error will appear in the logs for the item:
SKU example-here, Missing Attributes product_type. SKU example-here doesn't match any ASINs. Make sure that all standard product ids (such as UPC, ISBN, EAN, or JAN codes) are correct. To create a new ASIN, include the following attributes: product_type. Feed ID: 0. For more troubleshooting help, see http://sellercentral.amazon.com.au/gp/errorcode/200692370
To resolve this, go to Salestio > Profiles > Creation Profiles and add new profile here. Enable product creation in the Amazon Profile, and try sending the item again. Full guide on product creation features is below:
Salestio guide: Create new Amazon listings with variations
Keep in mind that you only need to set up mappings for the items that don’t yet exist on the marketplace. If you have all pants already listed, but still need publish shirts, you can skip adding mappings for pants.
Try Salestio
Salestio offers a flexible way of syncing your marketplace accounts with an e-commerce platform like Shopify, BigCommerce, Shopware, and more. Not a Salestio user yet? Get a Free 30-day Trial for your platform here.
