Connect your Walmart Marketplace store to Katana (via Extensiv Integration Manager) to automate sales and inventory management.
What you can do with this integration
Import sales orders from Walmart Marketplace → Katana
Match products, customers, and tax rates with existing Katana records
If no match exists, Katana will automatically create a new product, customer, or tax rate
Sync inventory levels from Katana → Walmart Marketplace
You can also apply the same approach to other apps available through Extensiv.
Learn more in our Extensiv Integration Manager overview
How it works
In Extensiv, the order destination is called a WMS (Warehouse Management System). Katana is set as the WMS and acts as the source of truth for inventory.
Walmart Marketplace is set as a Cart (Order Source). Extensiv imports orders, customer data, and products from Walmart Marketplace into Katana, and syncs stock levels back to Walmart.
Setting up Walmart Marketplace with Katana
Step 1. Create an Extensiv account
Log in to Extensiv (or create an account).
Step 2. Connect Katana as WMS
In Extensiv, open up Integration Management
Go to WMS and click Change WMS. Then, choose Katana MRP from the WMS list.
Click Grant Us API Access, sign in to your Katana account, and confirm.
After successful authorization, click OK, then Test WMS Connection.
If the test succeeds, click Save.
Step 3. Add Walmart as a cart
In Extensiv, go to Carts > New Setup > Walmart.
Step 4. Generate Walmart API keys
Open the Walmart Developer Portal in a new tab.
Select your Walmart account type and log in with seller credentials.
Generate an API key, then copy the Client ID and Client Secret into the Extensiv New Walmart Setup screen.
Step 5. Configure cart settings
Adjust the Walmart cart settings to fit your business preferences.
Click Test at the bottom of the page to verify the connection.
If successful, click OK to save changes.
Step 6. Configure Merchant settings
In Extensiv, go to Merchants > Edit Setup.
Review synchronization settings and set up a schedule for inventory sync with Katana.
That’s it!
Your integration is ready — Walmart Marketplace orders will now flow into Katana, and inventory updates from Katana will sync back to Walmart automatically.
Need help with setup or workflow customization? The Extensiv team is happy to help via their Support Portal.