If you receive an error “(filename.csv) contained no unique orders” this is because a unique order ID is required for all orders. There are several ways to resolve the issue. Follow the steps below for the option that works best for you.
Auto-generate Unique Order ID
If your CSV file does not include a column for Order ID, the platform can automatically generate one for your orders.
Click the Settings tab.
Under eCommerce select eCommerce Integrations.
Select your CSV integration from the list.
Under CSV Settings>Blank Order ID, check the box to Auto-generate unique order ID if not provided.
When finished, click Save Changes.
Retry uploading your CSV file.
Mapping the Order ID
If your CSV file included a column for Order ID, make sure it is properly mapped. For more details visit the Help Center link: CSV Mapping Explained
Click Edit Column Mappings.
Use the dropdown arrow to match the correct column containing your Order ID in your CSV file.
Note: If you have more than one product on an order you will need to add extra lines in CSV with the same order ID and the extra Product Information. Only Include the Order ID and the Product info do not add anything else, or it will treat as an additional shipment.