---
description: "Multi-warehouse allows merchants to store a product in multiple locations with accurate and consistent inventory data within the commerce application."
---

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# Multi-Warehouse

Multi-warehouse allows merchants to store a product in multiple locations with accurate and consistent inventory data within the commerce application.

Multi-warehouse in Medusa is composed of two modules: an inventory module - which is the NPM package `@medusajs/inventory` - and a stock location module - which is the NPM package `@medusajs/stock-location`.

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  type: 'link',
  href: '/modules/multiwarehouse/install-modules',
  label: 'Install Modules',
  customProps: {
    icon: Icons['academic-cap-solid'],
    description: 'Learn how to install the modules related to multi-warehouse',
  }
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You can also create your own modules and use them with the Medusa backend.

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  {
    type: 'link',
    href: '/modules/multiwarehouse/backend/create-inventory-service',
    label: 'Backend: Create Inventory Service',
    customProps: {
      icon: Icons['academic-cap-solid'],
      description: 'Learn how to create an inventory service to be used in a custom inventory module.'
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  {
    type: 'link',
    href: '/modules/multiwarehouse/backend/create-stock-location-service',
    label: 'Backend: Create Stock Location Service',
    customProps: {
      icon: Icons['academic-cap-solid'],
      description: 'Learn how to create a stock location service to be used in a custom stock location module.'
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---

## Features

### Multiple Stock Locations

Admins can manage the stock locations, which are the places they store their products. Stock locations are associated with different sales channels.

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    type: 'link',
    href: '/user-guide/multiwarehouse/locations',
    label: 'User Guide: Manage Stock Locations',
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      description: 'Learn how to manage stock locations in Medusa Admin.'
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  {
    type: 'link',
    href: '/modules/multiwarehouse/admin/manage-stock-locations',
    label: 'Admin: Manage Stock Locations',
    customProps: {
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      description: 'Learn how to manage stock locations using admin APIs.',
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### Inventory Management Across Locations

Admins can manage the inventory of product variants across the different stock locations.

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    type: 'link',
    href: '/user-guide/multiwarehouse/inventory',
    label: 'User Guide: Manage Inventory',
    customProps: {
      icon: Icons['users-solid'],
      description: 'Learn how to manage inventory using the Medusa Admin.'
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  },
  {
    type: 'link',
    href: '/modules/multiwarehouse/admin/manage-inventory-items',
    label: 'Admin: Manage Inventory',
    customProps: {
      icon: Icons['academic-cap-solid'],
      description: 'Learn how to manage inventory using the admin APIs.',
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### Manage Item Allocations in Orders

Admins can manage item allocations to choose which stock location to fulfill items from or return items to. Item quantities are reserved in a stock location until the item is fulfilled to ensure data consistency.

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    type: 'link',
    href: '/user-guide/orders/manage#manage-item-allocation',
    label: 'User Guide: Manage Allocations in Orders',
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      description: 'Learn how to manage allocations of items in an order using the Medusa Admin.'
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  },
  {
    type: 'link',
    href: '/modules/multiwarehouse/admin/manage-item-allocations-in-orders',
    label: 'Admin: Manage Allocations in Orders',
    customProps: {
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      description: 'Learn how to manage allocations of items in an order using the admin APIs.',
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---

## Understanding the Architecture

The commerce modules automatically detect whether a product variant is in stock, decrement the variant’s stock on fulfillment, and increment the variant’s stock on returns.

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  {
    type: 'link',
    href: '/modules/multiwarehouse/inventory-module',
    label: 'Architecture: Inventory Module',
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      description: 'Learn about the Inventory Module and how it works.'
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  {
    type: 'link',
    href: '/modules/multiwarehouse/stock-location-module',
    label: 'Architecture: Stock Location Module',
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---

## Related Modules

Discover Multi-warehouse’s relation to other modules in Medusa.

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  {
    type: 'link',
    href: '/modules/products/overview',
    label: 'Products',
    customProps: {
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      description: 'Manage the inventory of product variants across locations.',
    }
  },
  {
    type: 'link',
    href: '/modules/sales-channels/overview',
    label: 'Sales Channels',
    customProps: {
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      description: 'Stock locations are associated with sales channels.',
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  },
  {
    type: 'link',
    href: '/modules/orders/overview',
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    customProps: {
      icon: Icons['check-circle-solid'],
      description: 'Change available stock based on returns and fulfillment.',
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