Getting started
Item setup
Catalog management
Seller Fulfillment Services
Listing optimization
Order management
Taxes & payments
Policies & standards
Growth opportunities
Advertising
Walmart Fulfillment Services (WFS)
WFS basics
Getting started with WFS
WFS item setup
Shipping to WFS
WFS Inventory management
Walmart Cross Border - Imports
Walmart Multichannel Solutions
Multichannel Solutions: Overview
Multichannel Solutions: Set up items
Multichannel Solutions: Add sales channels
Multichannel Solutions: Manage customer orders
Multichannel Solutions: Troubleshooting fulfillment
Multichannel Solutions: Create customer returns
Multichannel Solutions: API integration
Multichannel Solutions: Solution providers
WFS growth opportunities
WFS policies & standards
WFS programs & services
Troubleshooting
Walmart Seller app
Learn more about the API calls that are unique to Walmart Multichannel Solutions (MCS) and how to integrate them with your existing tools. Â Â
About API integration
APIs allow the seamless sharing of data between your system and ours. By integrating APIs into your existing tools, like inventory management software, you can automate routine tasks that would otherwise be done manually, such as updating inventory counts and processing orders. All documentation is available in Developer Portal-Multichannel Solutions. To get started, generate your credentials. Â
How to get startedÂ
Create a Walmart catalog and configure settings in Seller Center by following the steps outlined in Multichannel Solutions: Set up items and Manage sales channels. Once you’ve onboarded, you can use APIs to automate inventory and orders.Â
We can provide consultation for API integration. Select the Help button in the Seller Center menu bar to contact Support, then describe your issue. You can also try troubleshooting common integration errors. Â
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 |
Submit customer orders. To specify which ecommerce channel, use the sales channel ID you added during onboarding. This will help you identify and resolve potential order creation issues upfront—aligned with error descriptions shown in Seller Center. | |
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.
| |
View the estimated delivery date. Make sure that your chosen shipping speed is appropriate for the promise. | |
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. | |
Track the fulfillment progress. | |
Create an RMA for a delivered order. You’ll be able to generate a return shipping label. | |
Cancel a previously placed return order. | |
Set up a new sales channel in MCS, including channel name, ship from and return addresses. | |
Updates the sales channel details you created for MCS, including name, ship from and return address. | |
Retrieve MCS sales channel details. |
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 URL. Whenever the status of an order or return changes, you’ll automatically get a notification. To receive notifications, you’ll need to share your endpoint URL with WFS and allow up to 1 week for us to configure it on our end.Â
To enable the webhook, please subscribe to notifications. If you have questions, find out more about notifications, or select the Help button in the Seller Center menu bar to contact Support. Â
The information found within this guide, and the related hyperlinks, is for general informational purposes only, and is not considered legal advice. This guide 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.