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  • Introduction to Walmart supplier APIs
  • What types of APIs does Walmart offer?
  • How to get help
  • Authentication management API overview
  • Electronic Data Interchange (EDI) interface
  • 824 Application Advice
  • 846 Inventory Inquiry/Advice
  • 850 Purchase Order
  • 855 Purchase Order Acknowledgement
  • 856 Ship Notice and Manifest
  • 860 Purchase Order Change Request – Buyer Initiated
  • 879 Unit Cost Price Information Advice
  • 997 Functional Acknowledgement
  • EDI connection types
  • XML interfaces
  • XML file naming conventions
  • Confirmation and error interface
  • Inventory interface
  • Order interface
  • DSV Cost Management API overview (BETA)
  • Request Approval to Use Cost API
  • DSV Inventory Management API overview
  • Recent releases and planned deprecations
  • About bulk inventory updates
  • DSV Lag Time Management API overview
  • Recent releases and planned deprecations
  • DSV Order Management API overview
  • Introduction to the EPCIS Events API
  • Key concepts and glossary
  • EPCIS Events API authentication
  • EPCIS Validation
  • EPCIS Events
    • Aggregation
    • Disaggregation
    • Commission
    • Decommission
    • Observation
    • Transformation
  • Common EPCIS API responses
  • Error codes
  • Feed Management API overview
  • Feed files available
  • Feed status API update
  • How to upload feed files
  • Feed ID response formats
  • How to track feed submissions
  • Understanding feed statuses
  • Item Management API overview
  • Item Management API releases
  • Product type taxonomy overview
  • Bulk item setup and maintenance by product type overview
  • Item setup by product type feed file overview
  • Item maintenance by product type feed file overview
  • Item setup and maintenance by product type: additional information
  • Make bulk item submissions and track status
  • Item setup and maintenance implementation guide
  • Invoices and Payments API overview
  • Notifications overview
  • About notification events
  • Feed status notification event
  • Report status notification event
  • On Request Reports API overview
  • Report filters
  • DSV orders report
  • DSV inventory report
  • Invoices report
  • Item product content data report
  • Item configuration data report
  • Vendor-managed pricing report
  • Order Management API overview
  • Pre-Generated Reports Management API overview
  • Rate limiting
  • Bulk Feed API throttling limits
  • Synchronous API throttling limits
  • Walmart sandbox
    • Get sandbox credentials
    • Test 1P Supplier APIs
    • Feeds and on-request validations
  • Vendor Managed Pricing API overview
  • Supplier troubleshooting resources
    • Authentication
    • Item setup & maintenance
    • Reports
    • API issues
  • Authentication and authorization
  • Required headers and requests
  • Supplier One and third-party app connections
  • Errors and status codes
  • Troubleshooting and support
  • Drop-ship vendors
  • Glossary
  1. FAQ

Required headers and requests

What headers are required for Walmart API calls?

All API requests must include required headers such as access token, correlation ID, consumer channel type, and service name.

What is a correlation ID and why is it important?

It is a unique identifier that helps trace and troubleshoot API requests.


    • What headers are required for Walmart API calls?
    • What is a correlation ID and why is it important?
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