Notifications
Configure
image

No Data found

You don't have any notifications

Header Image
Guide
Multichannel Solutions: APIs and solution providers
Last updated on Jun 13, 2025
Reading time: 3 min
Overview

Learn how to automate your business for Walmart Multichannel Solutions. If you have engineering resources, you can integrate with our APIs to automatically create customer orders, view inventory levels and get real-time notifications for fulfillment. Or, you can work with solution providers that are already integrated with our APIs and tailor support to your needs.


Get started

First, you’ll need to create a Walmart catalog and configure settings in Seller Center. Go to Multichannel Solutions: Set up items and Manage sales channels to learn how. Once you’ve onboarded, you can use APIs or solution providers to automate inventory and orders.


API integration

APIs allow your engineering team to seamlessly share data between your system and ours. All documentation is available in Developer Portal-Multichannel Solutions. To get started, generate your credentials.

Pro tip

We can provide consultation for API integration. Select the Help button in the Seller Center menu bar to contact Support. Rather than describing your issue, select Issue categories, then select these links: Walmart Fulfillment Services (WFS) Program > Walmart Multichannel Solutions > API Integration Support, and select Get in touch with us.

API calls for Multichannel Solutions

Some functionality will be through Marketplace and WFS APIs, but Multichannel Solutions also has these unique APIs.

Multichannel API

Function

Create Customer Order 

Submit customer orders. To specify which ecommerce channel, use the sales channel ID you added during onboarding.

Get WFS Inventory

Check real-time inventory levels. This allows you to view total inventory levels across all channels, as well as inventory available for each channel by a particular SKU. You can query 300 SKUs at a time.



If the same item is distributed across your network, this API also helps you check that you have enough multichannel-eligible inventory in a WFS facility. That way, you can avoid overselling or canceling orders.

NOTE: WFS inventory (Legacy) API is being deprecated and will be removed after March 03, 2026. We recommend transitioning to the new WFS Inventory API.

Fetch Delivery Promise

View the estimated delivery date. Make sure that your chosen shipping speed is appropriate for the promise.

Cancel Customer Order

Cancel a fulfillment request. In most cases, you can cancel within 1 hour of creating the customer order. If the fulfillment center cancels the order, you’ll get a success message on the API call.


Note that canceling an order sends a request to the fulfillment center. However, it doesn’t guarantee cancellation if associates have already started preparing the order.

Get Fulfillment Order Status

Track the fulfillment progress.

Create Customer Return Order

Create an RMA for a delivered order. You’ll be able to generate a return shipping label.

Cancel Customer Return Order

Cancel a previously placed return order.

Notes

To minimize the chance for customer order cancellations due to insufficient inventory or item restrictions, run the Fetch Delivery Promise API before running the Create Customer Order API. This will help validate that the items you want to create the order for can be fulfilled without issue.

Webhook

We also have a webhook that will publish notifications to your endpoint. Whenever the status of an order or return changes from received through delivered, you’ll automatically get a notification. To receive notifications, you’ll need to share your endpoint with WFS and allow up to 1 week for us to configure it on our end.


To enable the webhook, please subscribe to notifications. If you have questions, select the Help button in the Seller Center menu bar to contact Support. Rather than describing your issue, select Issue categories, then select these links: Walmart Fulfillment Services (WFS) Program > Walmart Multichannel Solutions > API Integration Support, and select Get in touch with us.


Solution providers

Whether you’re seeking full-service integration or specialized functions, there’s a solution tailored for your business. Reach out directly to the providers below that are integrated with Multichannel Solutions and WFS. They can streamline your business by managing customer orders, giving real-time visibility into inventory and coordinating restocks.


Once you find a solution provider that fits your needs, simply connect a solution provider from the Apps page in Seller Center to get started. To streamline automation with Multichannel Solutions (MCS), ensure that MCS is set as your default and/or preferred fulfillment option with your solution provider.

Solution Provider

Profile

Website

DataCaciques provides all-in-one eCommerce solution for Sellers with a full set of SaaS solutions involving managing your Inventory, Listings, Pricing, Data Analysis, Buyer Message, Warehouse and Order management.

https://www.datacaciques.com/

GeekSeller is a multichannel eCommerce platform that provides an easy and affordable solution for all sellers.

https://www.geekseller.com/

G+ is a well-known cross-border eCommerce digital infrastructure service provider in China, focusing on providing full closed-loop eCommerce solutions for cross-border e-commerce sellers.

https://jijiaerp.com/

Rithum™ is known as an influential and trusted commerce network, helping brands, suppliers, and retailers work together to deliver connected e-commerce experiences.

https://www.rithum.com/

Shenzhen Eccang Technology Ltd. provide multi-platform overseas solutions, integrated cross-border logistics and warehousing management systems, as well as professional knowledge services.

https://www.eccang.com/walmarterp_en.html

Notes

The information found within this article, and the related hyperlinks, is for general informational purposes only, and is not considered legal advice. This article may contain links to third party content, which Walmart does not warrant, endorse, or assume liability for and your reliance on such content is solely at your own discretion.

Tell us what you think

More in Walmart Fulfillment Services (WFS)
Walmart Fulfillment Services (WFS): Overview
Walmart Fulfillment Services (WFS)
Walmart Fulfillment Services (WFS) enables you to spend more time focusing on increasing sales, while having confidence that your orders will be delivered quickly and with outstanding customer support.
WFS fees
Walmart Fulfillment Services (WFS)
WFS' fee structure is simple and straightforward, without signup or monthly subscription fees.
WFS fees calculator
Walmart Fulfillment Services (WFS)
Our easy-to-use fees calculator helps estimate your fulfillment and storage fees for a Walmart-fulfilled item.
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.

c2025 Walmart. All Rights Reserved  | Privacy Policy