When you store stock in more than one Amazon warehouse, Amazon needs to know what's available at each one to show accurate delivery times. If Amazon only sees one combined number, buyers get delivery dates that don't match reality. That can lead to missed deadlines, SLA violations, and account health problems.
Amazon's Multi-Location Inventory feature solves this by letting you report stock by warehouse rather than as a single total. M2E Pro supports MLI and can send stock levels for each warehouse from Magento to Amazon. As a result, your listings show delivery times based on what's actually in stock at each location.
This guide explains how Amazon Multi-Location Inventory works and how to configure it in M2E Pro.
What is Multi-Location Inventory #
Multi-Location Inventory is an Amazon feature for Fulfilled by Merchant (FBM) sellers. It lets you report stock by warehouse (supply source) instead of as a single combined number.
For instance, the same SKU is stocked in two of your warehouses – 30 units in Dallas and 25 in Chicago. Without MLI, Amazon only knows you have 55 units somewhere, with no idea which warehouse holds what. Turn MLI on, and Amazon can see each location's count separately. This way, when an order arrives, it calculates the delivery date from the closest warehouse with the item in stock.
ℹ️ MLI is available only on the Amazon US marketplace.
Benefits of MLI for your sales #
If you hold stock across several locations, MLI can improve performance in a few ways:
- More accurate delivery dates. Amazon shows delivery times based on the nearest warehouse with stock.
- Lower shipping costs. Orders ship from the closest warehouse, cutting transit time and carrier fees.
- Lower SLA risk. Accurate ship-from data helps prevent late shipments and performance issues.
- Better conversion. Faster delivery estimates can boost Buy Box performance and buyer confidence.
- Simpler setup. You manage several locations under one shipping template instead of configuring separate rules for each location.
How MLI works in M2E Pro #
M2E Pro uses Magento's Multi-Source Inventory (MSI) to track stock by location. You choose which Magento source feeds which Amazon location, and M2E Pro pulls quantities from that mapping during synchronization. If a product is supplied from several Magento sources, M2E Pro uses their combined quantity when listing, relisting, or revising it.
How to configure MLI in M2E Pro #
ℹ️ Before you start, make sure your ship-from locations (supply sources) are set up in Amazon Seller Central, and that Multi-Source Inventory is enabled in Magento.
1) Go to Amazon > Configuration > Accounts > Multi-Location Inventory.
2) Map each Magento Inventory Source to an Amazon location. Select an Amazon location for each source you want to use, and leave it as None for any source you don't need. This controls where quantities are pulled from during synchronization.
3) Open the Selling Policy assigned to your Amazon US listings. Go to the Quantity settings, and set the quantity to Use Multi-Location Inventory.
Once set up, each product's quantity is based on your Magento source and Amazon location mapping. You can see the current quantity per location for any product in the Amazon Listings grid.
