Walmart EDI: requirements & onboarding

What documents they require

Most Walmart supplier programs center on core order-to-cash X12 (versions and qualifiers per your commodity). Typical document families include: Exact specs come from your partner packet — treat this as a planning checklist, not a substitute for their current implementation guide.

• 850 (Purchase Order) — inbound POs and changes
• 855 (PO Acknowledgment) — accept, reject, or change responses
• 856 (ASN/Ship Notice) — carton- and item-level shipment data tied to the PO
• 810 (Invoice) — match to PO and receipt timing rules
• 820 (Remittance) — when payment advice is in scope for your program
• 214 / 990 or other transport sets — when TMS or routing partners are required

How long onboarding takes

6–12+ weeks

Timeline depends on your item setup, DC assignments, and parallel testing cycles in RetailLink. Chargeback risk is highest around ASNs and invoices — budget time for exception handling, not just first message exchange.

How SignalEDI handles it

• Sandbox and validation so 850/855/856/810 flows match Walmart’s expectations before production traffic.
• API and dashboard visibility — treat EDI like an integration, not a black-box VAN queue.
• Partner-profile style onboarding so your team isn’t re-learning X12 from PDFs on day one.

Self-serve evaluation, published pricing, and API-first flows — aligned with how lean teams actually ship EDI. Developer QuickStart

Pricing

Transparent tiers on our pricing page — Starter through Enterprise — with usage-based expansion as your document volume and partner count grow. No “call for quote” as the default path for standard SMB onboarding.

Ready for production-grade EDI?

Create your account, connect your systems, and move toward partner certification with validation and visibility built in — not weeks of slide decks.