This page provides instructions on how to create a new listing that uses commingling (virtual tracking), which relies on the manufacturer barcode. If you want to make changes to existing FBA product listings, go to How to switch from using Amazon barcodes to manufacturer barcodes.
By default, your seller account is set to use the manufacturer barcode to track your eligible inventory throughout the Amazon fulfillment process. You can change your barcode settings only for new shipments and for inventory that has not yet been received at the fulfillment center.
To use the manufacturer barcode, products must meet the eligibility requirements listed on Use virtual tracking to commingle inventory.
To create a new listing that uses the manufacturer barcode, choose Fulfillment by Amazon as the fulfillment type. For more information, go to List products for Fulfillment by Amazon.
Then follow these steps: