Costco EDI: requirements & onboarding

What documents they require

Typical Costco supplier programs rely on standard wholesale X12 order-to-cash sets, including: Exact specs come from your partner packet — treat this as a planning checklist, not a substitute for their current implementation guide.

• 850 / 860 — PO and changes
• 855 — acknowledgments
• 856 — ASN with pack hierarchy
• 810 — invoice timing aligned to receipt

How long onboarding takes

6–12 weeks

Item setup, routing, and DC alignment drive calendar length. Strong 856/810 testing reduces costly post-receipt corrections.

How SignalEDI handles it

• End-to-end visibility from PO through ASN and invoice in one platform.
• Fewer manual touchpoints at cutoff — fewer opportunities for reference errors.
• Healthcare-style audit mindset available where your program touches regulated goods — see our healthcare add-ons if applicable.

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

Pricing

Starter through Enterprise pricing — see /pricing. Expand with volume and partner add-ons as programs grow.

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.