To reset your Walmart credentials follow the steps below.
Click the link below to bring you to the Walmart Marketplace Developer page.
https://developer.walmart.com/#/generateKey
Note: This is a different URL from your Seller Central account, so use the URL above.
Select My Account.
Select Marketplace (US, Mexico & Canada).
Enter your admin credentials and click Log In. After logging in it will bring you directly to the screen with the Production Keys.
Next to the Client ID and Client Secret select Reset.
This will generate new credentials. Copy the Client ID and Client Secret, as you will need to paste them into your Walmart Integration settings for XPS in the next step.
Open a new browser window, log in to your XPS Ship Account.
Click the Dashboard tab.
Scroll to the bottom to Ecommerce Integrations, and select your Walmart integration.
In the Walmart Settings, paste the Client ID and Client Secret from the previous step.
When finished, click Save Changes.
If all info is entered correctly, you will receive a message at the top of the page indicating the integration is now connected. Orders will start to appear momentarily.