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EDI (Electronic Data Interchange) is the computer-to-computer exchange of standardized business documents — purchase orders, shipping notices, and invoices — between trading partners. Major retailers like Walmart, Target, Amazon, and Costco require EDI compliance as a condition of vendor onboarding. Without it, you cannot process orders, receive payments, or maintain shelf space with big-box retail partners. Learn what EDI is and why retailers require it before your first vendor packet lands in your inbox.

The three documents that form the core of every retail order cycle are the EDI 850 (purchase order sent by the retailer), the EDI 856 (advance ship notice sent before your shipment arrives), and the EDI 810 (invoice sent after shipment). Missing or incorrect versions of any of these triggers chargebacks, payment delays, and receiving refusals at the retailer's distribution center. See a full breakdown of EDI transaction codes and what each one does in the order lifecycle.

EDI chargebacks are financial penalties retailers deduct directly from supplier payments when shipments or documents fail compliance requirements. The most common triggers are late or missing advance ship notices, ASN data that doesn't match the physical shipment, incorrect carton labeling, and OTIF violations. A 2% chargeback rate on $10 million in revenue equals $200,000 in avoidable losses. See the full breakdown of what causes EDI chargebacks and the operational fixes that prevent them.

For a brand starting from zero, a full EDI implementation — document mapping, testing, and validation for one retailer — typically takes several weeks to a few months. The timeline depends on how many document types are required, how quickly testing cycles run, and whether you're building in-house or leveraging a 3PL with existing retailer connections. Working with a partner that already has EDI integrations in place can compress onboarding significantly. Learn how ShipNetwork's EDI fulfillment services reduce implementation time for brands entering retail.

Yes. A retail-ready 3PL like ShipNetwork can manage the operational EDI flows that connect directly to fulfillment — purchase orders, advance ship notices, invoices, and inventory reports — as part of the standard fulfillment relationship. This removes the burden of building and maintaining retailer-specific document maps, monitoring transmission failures, and resolving chargeback disputes from your internal team. See how ShipNetwork handles EDI compliance for brands selling into major retail accounts.