Maintaining up-to-date inventory for your items on Walmart.com ensures a great experience for your customers and greater sales opportunities for you.
You can use the Inventory APIs to maintain your inventory.
Send GET or PUT API call to the Inventory resource to either:
Or, send call to Feeds resource to Upload inventory in bulk
For more information to calculate inventory, refer to the article: https://sellerhelp.walmart.com/seller/s/guide?article=000006796&geo=Canada
Download the Inventory Management XSDs from the below directory: Canada-Inventory-XSD.zip