settings/
Fulfillment by Amazon/
Inbound Settings/
Distributed Inventory Placement (default setting)
Amazon will determine the distribution of your inventory among one or more
fulfillment centers during the shipment creation process. This may include
multiple shipments for individual Merchant SKUs.
Inventory Placement Service
All quantities of a single Merchant SKU will be assigned to a single
fulfillment center determined by Amazon during the shipment creation process
. A per-unit service fee applies. Learn more