Walmart Marketplace EDI: requirements & onboarding

Walmart Marketplace-specific onboarding context

• Walmart Marketplace and Seller Center workflows differ from store-supplier RetailLink EDI — we help marketplace sellers add structured X12 when programs require it alongside portal operations.
• Walmart Marketplace EDI onboarding window: 4–10 weeks. Marketplace onboarding timelines vary by item setup and test waves. Do not assume RetailLink supplier timelines apply — confirm your program lane (marketplace vs store supplier) before scoping documents.
• Walmart Marketplace EDI document checklist includes 850 / 855 — purchase orders and acknowledgments for marketplace or wholesale lanes; 856 — ASN with item and carton detail when routing requires structured ship notices; 810 — invoice timing aligned to PO and receipt references.
• Separate marketplace guidance from RetailLink store-supplier flows — fewer wrong-document surprises.

What documents they require

Marketplace sellers adding EDI typically align to Walmart’s structured order-to-cash expectations. Common 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 / 855 — purchase orders and acknowledgments for marketplace or wholesale lanes document guide →
• 856 — ASN with item and carton detail when routing requires structured ship notices document guide →
• 810 — invoice timing aligned to PO and receipt references document guide →
• 820 — remittance advice when payment programs include structured cash application document guide →

Connectivity and testing requirements

Average onboarding time

4–10 weeks

Marketplace onboarding timelines vary by item setup and test waves. Do not assume RetailLink supplier timelines apply — confirm your program lane (marketplace vs store supplier) before scoping documents.

How SignalEDI handles it

• Separate marketplace guidance from RetailLink store-supplier flows — fewer wrong-document surprises.
• Validation and monitoring tuned to high-volume retail cadence and ASN cutoffs.
• Developer-first API plus guided onboarding for teams shipping software, not EDI manuals.

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

Pricing

Transparent SignalEDI tiers — scale document volume as marketplace orders grow. See /pricing.

FAQ

What EDI documents does Walmart Marketplace typically require?

Marketplace sellers adding EDI typically align to Walmart’s structured order-to-cash expectations. Common document families include: Typical sets include: 850 / 855 — purchase orders and acknowledgments for marketplace or wholesale lanes; 856 — ASN with item and carton detail when routing requires structured ship notices; 810 — invoice timing aligned to PO and receipt references; 820 — remittance advice when payment programs include structured cash application Exact specs vary by commodity and program — always confirm against your trading partner packet.

How long does Walmart Marketplace EDI onboarding usually take?

Many suppliers land in about 4–10 weeks, but timelines vary by category, testing waves, and exception cycles. Marketplace onboarding timelines vary by item setup and test waves. Do not assume RetailLink supplier timelines apply — confirm your program lane (marketplace vs store supplier) before scoping documents.

How does SignalEDI help without hiring a full EDI team?

Separate marketplace guidance from RetailLink store-supplier flows — fewer wrong-document surprises. Validation and monitoring tuned to high-volume retail cadence and ASN cutoffs. Developer-first API plus guided onboarding for teams shipping software, not EDI manuals.

Where can I see SignalEDI pricing?

Transparent SignalEDI tiers — scale document volume as marketplace orders grow. See /pricing.