At the page linked here, select your specific Walmart account type and log in using your Seller login credentials: https://developer.walmart.com/#/generateKey
Copy the displayed Client ID and Client Secret into CartRover
Make sure you are in the Oauth Access Token tab Walmart. If you do not see this tab, log out and make sure you log in and select US Marketplace.
Leave the Channel Type field blank (under cart edit setup page of CartRover).
To obtain your API credentials, in your Walmart account, please click on the gear icon
Click on Generate Key(or Regenerate Key) button to obtain your Private Key.
Each time the Regenerate Key button is clicked, Walmart will deactivate your previous Private Key.
However, your Consumer ID and Channel Type code remain unchanged.
If you are connecting to Walmart DSV (not Marketplace), the connection will also require you to enter your "DSV Order Ship Node". This is found in your Walmart DSV account in the Distributor ID field.