When creating a shipment of inventory for Amazon, you have two options for inventory placement.
1. Shipping to multiple fulfillment centers (default)
With distributed inventory placement, Amazon might assign units of a product/ASIN to multiple fulfillment centers. This depends on the products you're shipping and where you're shipping from.
2. Shipping to one fulfillment center
: You can also sign up for the Inventory Placement Service
and send all your inventory to a single fulfillment center. When the shipment arrives there, it's split up and sent to multiple fulfillment centers.