Getting started
Item setup
Item setup methods
Item content, imagery, and media
Variant management
Resold
Automotive fitment
Troubleshooting
Track item setup or maintenance activity in Seller Center
Troubleshoot item setup errors
Troubleshoot product ID errors
Request a GTIN exemption
Troubleshoot common integration errors
Troubleshoot items on hold
Troubleshoot product variant errors
Troubleshoot automotive fitment errors
Catalog management
Walmart Fulfillment Services (WFS)
Seller Fulfillment Services
Listing optimization
Order management
Taxes & payments
Policies & standards
Growth opportunities
Advertising
Walmart Seller appNew
This guide summarizes common integration errors you may encounter when managing your Marketplace business through direct APIs or with approved Solution Providers. If the error continues to persist, select the Help button in the Seller Center menu bar to contact Seller Support.
For common integration errors that occur in Seller Center, refer to our guide on troubleshooting item setup.
Common scenarios
1. You received an HTTP error.
Marketplace APIs rely on HTTP requests to send and receive data between systems. When an HTTP error occurs, it usually means something went wrong with the request or response, such as incorrect input, missing permissions or a server issue. These include errors like 400 Bad Request, 401 Unauthorized  and 404 Not Found, among others.
What should I do?
In Developer Portal, consult the error codes guide for detailed information and troubleshooting tips on HTTP request errors. You can also search for specific error codes in the API references.
2. Your approved Solution Provider lost connection.
Your approved Solution Provider’s connection to your account is valid for one year from the date you connect them on Seller Center. Walmart will notify you when a connection is close to expiring. Losing connection with your approved Solution Provider will stop your Marketplace data from syncing, which can result in errors such as missed shipments or auto-canceled orders.
What should I do?
If a connection does expire or is lost, you can reconnect the approved Solution Provider in your App Listings.
Regularly monitor the connection between your approved Solution Provider and your Seller Center account to ensure updates like orders and shipments are being updated correctly. If a connection issue occurs, contact your strategic account manager or create a case with Seller Support. Include the issue timeline, integration type, API used, error details and whether the issue is intermittent or continuous.Â
If you fulfilled a Marketplace order but it was not marked as shipped and the order was auto-canceled due to third-party desynchronization, Walmart is not responsible for any loss of product associated with the impacted orders, and you shall bear all costs for such a loss.