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Guide

How to update seller-fulfilled inventory: Overview

Last updated on Sep 26, 2024

Reading time: 3 min

In this guide:

Overview
How does it work?
Frequently asked questions
Helpful resources

Overview

Keeping your inventory up to date ensures that your item never goes out of stock and remains available for purchase on Walmart.com. In this guide, we’ll give you an overview of four different ways to update inventory.

How does it work?

If inventory is running low, you should replenish it immediately and update your inventory counts on Walmart Marketplace.

Method	Use Case
Single Item Upload Method	You can update inventory for individual SKUs or small groups of items through your Catalog in Seller Center.
Bulk Update Method	The Inventory spec is an Excel template that allows you to update inventory information for several items at once in Seller Center. For more information, visit Update Inventory in Bulk in Seller Center.
API Integration	If you have a large catalog of items and a technical team to support your operations, consider automating inventory updates through API. For more information, visit Integration Methods: API.
Solution Provider	Walmart Marketplace works with several third-party Solution Providers that can help you outsource inventory updates. For more information, visit Choose a Solution Provider.

Pro tip

Use this inventory management checklist to make sure your items are always in stock.

Frequently asked questions

How are orders reserved and processed?

My item is appearing as out of stock on Walmart. Why does it show that I have inventory Reserved and On hand in Seller Center?

Once an item has been purchased by a customer, it is added to your reserved inventory quantity until you’ve marked it as shipped. If your on hand and reserved inventory quantities are the same amount, this means customers have purchased all inventory on hand and the item will appear as out of stock on Walmart.com. To avoid this, we strongly encourage you to provide Walmart with an on hand inventory quantity that is at least 20 more than the reserved inventory quantity. For example, if you have 30 shirts in your reserved inventory you should provide an on Hand inventory quantity of 50.

How do I zero out my Reserved inventory quantity?

Why is an item still showing as in stock even though I set the On hand inventory quantity to zero?

Helpful resources

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Before you start selling on Walmart Marketplace

Getting started

In this guide, we’ll cover the essentials of what you need to know before you apply and start selling on Walmart Marketplace.

Go to guide

Complete onboarding in Seller Center

Getting started

Seller Center is your one-stop-shop for managing your items on Walmart Marketplace.

Go to guide

Global onboarding: Set up an additional market

Getting started

In this guide, you’ll learn how to add more markets with the same account. 

Go to guide

About Walmart.com

Walmart Inc. (NYSE:WMT) helps people around the world save money and live better- anytime and anywhere - in retail stores, online, and through their mobile devices. Each week, approximately 240 million customers and members visit more than 10,500 stores and numerous eCommerce websites in 20 countries. With fiscal year 2023 revenue of $611 billion, Walmart employs approximately 2.1 million associates worldwide. Walmart continues to be a leader in sustainability, corporate philanthropy and employment opportunity.