Walmart Marketplace + Odoo: How to Automate Walmart Seller Operations

Walmart Marketplace has grown to over 150,000 active sellers and continues to expand aggressively as an alternative to Amazon. For sellers already using Odoo ERP, integrating Walmart Marketplace creates a unified operations center that manages Walmart orders alongside your other sales channels.

Why Walmart Sellers Need ERP Integration

Walmart's marketplace has strict seller performance requirements:

• On-time shipping rate must exceed 95%
• Valid tracking rate must exceed 99%
• Cancellation rate must stay below 2%
• Return rate monitoring affects Buy Box placement

Meeting these thresholds consistently requires automated order processing. Manual workflows introduce delays and errors that directly impact your seller scorecard.

Walmart Marketplace API

Walmart uses a REST API with the following key endpoints:

• Items API — Product listing management
• Inventory API — Stock quantity updates
• Orders API — Order retrieval and status updates
• Returns API — Return request management
• Reports API — Performance and settlement data

Authentication uses a client ID and client secret with token-based access. The ECOSIRE Walmart Store Management module handles all API communication.

Walmart Fulfillment Services (WFS)

Walmart's fulfillment program (WFS) is similar to Amazon FBA. Integration considerations:

• Inbound shipments — Track inventory transfers from your warehouse to WFS centers in Odoo
• WFS orders — Fulfilled by Walmart, but orders still sync to Odoo for financial tracking
• Storage fees — WFS storage fees mapped to Odoo expense accounts
• Conversion tracking — WFS items get the W+ badge, potentially increasing conversion rates

Walmart-Specific Product Requirements

Walmart has strict product content requirements that differ from other marketplaces:

• Rich content — Walmart rewards listings with enhanced content (videos, comparison charts, 360-degree images) with higher search placement
• Item spec compliance — Each category has required and recommended attributes
• Brand portal — Brand-registered sellers get enhanced listing tools
• Pricing rules — Walmart's pricing algorithm monitors competitor prices and may unpublish listings priced significantly above the competition

The integration ensures product data from Odoo meets Walmart's content requirements during listing sync.

Multi-Channel Inventory Strategy

For sellers on Walmart and Amazon simultaneously, inventory allocation is critical:

• Shared pool approach — Total inventory available across all channels with safety buffers
• Allocated approach — Dedicated inventory per channel based on historical velocity
• Hybrid approach — Core stock shared, with channel-specific reserves for promotional events

The Odoo integration supports all three strategies through configurable inventory rules per marketplace.

Setup and Configuration

1. Install the Walmart Store Management module
2. Apply for Walmart Marketplace API access
3. Configure API credentials in Odoo
4. Map Walmart categories to Odoo product categories
5. Submit product feeds and wait for Walmart approval
6. Enable order synchronization
7. Configure WFS tracking (if applicable)

Performance Standards

With automated integration, typical performance metrics include:

• Order processing under 4 hours from receipt to shipping label
• 99.5%+ valid tracking rate through automated tracking upload
• Less than 1% cancellation rate via real-time inventory sync
• Settlement reconciliation completed within 24 hours of payout

Next Steps

Walmart Marketplace is a high-growth channel that rewards operational excellence. Explore the Walmart Store Management module or talk to our team about building your Walmart integration strategy.