Costco · InfiPlex OMS Integration
Costco Integration: EDI compliance, automated instead of anxious
Costco's supply chain runs on strict EDI discipline — exact document timing and little tolerance for errors. The InfiPlex™ OMS connects your Costco vendor relationship so purchase orders pull in automatically, the ASN and invoice documents Costco requires go out on time, and your inventory stays synced with every other retailer you supply.
- EDI Purchase Orders, AutomatedWarehouse replenishment & Costco.com dropship
- Built for ComplianceAccurate, on-time ASNs reduce chargebacks
- USA-Based Support TeamOnboarding, EDI mapping & training included
How it works
How the InfiPlex Costco integration works
Costco vendors typically run two connected but distinct flows — bulk EDI 850 purchase orders replenishing Costco's depots in case-pack and pallet configurations, and, for some suppliers, per-member dropship orders through Costco.com. InfiPlex pulls both order types into one queue, generates the 856 ASN and 810 invoice Costco's EDI program requires, and keeps your available inventory synced with every other retailer and channel you supply.
What’s included
Everything the Costco integration handles for you
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EDI Purchase Orders, Automated
850 purchase orders pull into the OMS about every 15 minutes, for both depot replenishment and Costco.com dropship.
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Built for Compliance
InfiPlex generates and transmits the 856 ASN, 810 invoice, and 997 acknowledgment automatically.
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Real-Time Inventory Sync
One pool across Costco and every other retailer or marketplace you supply, with buffers sized for vendor commitments.
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ANSI X12 Standards Handled
Configured to Costco's required transmission protocols (AS2, SFTP, HTTPS) and document formats.
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3PL Routing
Route Costco orders to a connected 3PL, with EDI confirmations generated automatically once it ships.
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ERP-Ready
Connect NetSuite (Growth Pro) or QuickBooks Online to reconcile wholesale volume against your books.
Costco Connection Set-up
InfiPlex works with you to manage the required Costco testing processes with CommerceHub. The integration testing process is required by CommerceHub and Costco for any seller wanting to automate their order and inventory management.
Frequently asked
Top Costco questions, answered
Our dedicated FAQ hub answers 26 real questions about setup, order management, inventory sync, shipping, and pricing. A few of the most-asked:
Connect the rest of your stack
Pair Costco with the systems you already run
InfiPlex connects Costco with 130+ marketplaces, carts, shipping platforms, 3PLs, WMS, and ERP systems — and our Growth Packages include building new API integrations you need at no additional cost.
- NetSuiteERP connectivity for EDI-heavy vendors
- QuickBooks OnlineVendor revenue lands cleanly in the books
- 3PL ConnectorRoute dropship orders straight to your 3PL
- Amazon (all channels)Seller Central, Vendor Central, FBA & Business
- ShopifyYour DTC storefront, one shared inventory pool
- Sam's ClubAnother warehouse-club vendor relationship
- Walmart MarketplaceAn open marketplace, unlike Costco's vendor model
- Any EDI ConnectionConnect any other EDI retail trading partner
Ready to put Costco on autopilot?
your OMS is typically live in 1–3 business days, and our USA‑based team handles onboarding with you — no coding required.
Questions about your exact setup?
Our team configures Costco integrations every week. Contact us, email info@infiplex.com, or call 888‑770‑0857 and we’ll walk through your channels, warehouses, and volume together.
Costco and Costco Wholesale are trademarks of Costco Wholesale Corporation. All other marketplace and product names are trademarks of their respective owners. InfiPlex is an independent integration provider; Costco's vendor approval process, EDI requirements, and program terms are set by Costco and are subject to change — confirm current details with Costco. ©2026 InfiPlex. All rights reserved.
