To start scanning spreadsheets in Scan Unlimited, you must first add your Amazon MWS credentials.
To add a marketplace, go to Settings on the left navigation menu.
Within the “Amazon Credentials” tab, click the “Add Marketplace” button.
Once clicked, you will be presented with an option to select a region (either North America or Europe).
To add Scan Unlimited as a developer, simply follow the steps outlined in the pop-up window.
If your credentials are valid, the marketplace will appear as registered. You are now ready to start scanning product list files!
NOTE: Newly created Amazon Seller account may show as invalid. This may happen if your Amazon Seller Central account is not yet fully verified. Please allow 24 hours before submitting your credentials again.
It is also possible for you to receive invalid credentials if there's an issue with your billing in SellerCentral and/or you have recently revoked access for us and Amazon has not yet propagated the registration yet (The process is eventually consistent).
If none of these reasons are the reasons for you having trouble with adding a marketplace, please contact our support and we will provide you with the necessary files to start a seller support case.
If you're registered in multiple Amazon marketplaces, simply repeat the process again for any additional marketplaces. You will now have the ability to choose a different marketplace when scanning a file.