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Our EDI experts handle your complete Walmart EDI setup, from AS2 connectivity and testing to final certification across Walmart's warehouse, DSV, DSD, and import supplier programs. For businesses requiring deeper automation, our technical team can integrate your Walmart-specific 850, 855, 856, and 810 transactions directly into your ERP system. We build the custom logic necessary to eliminate manual entry and maintain 100% compliance.
We handle every aspect of Walmart EDI compliance so you can focus on growing your business with Walmart.
We review Walmart's EDI requirements for your supplier program, your ERP system, and your current workflows to plan the right integration.
We build custom EDI maps to Walmart's specifications, set up your AS2 connection, and configure GS1-128 label and SSCC requirements.
We run Walmart's testing process on your behalf, validating every transaction set so you move to production without rework.
Launch your fully automated Walmart EDI connection. Your documents flow on schedule while our team monitors and manages everything 24/7.
Walmart's EDI program covers more than exchanging documents. Here is what Walmart requires at each step, and how Infocon Systems takes care of it for you.
Walmart sets up new suppliers through its supplier onboarding process and Retail Link, the supplier portal where you manage item setup, purchase orders, and performance scorecards. EDI connectivity and document testing are coordinated with Walmart's EDI team before you are approved for production.
Walmart's standard connection for supplier EDI is AS2, a secure point-to-point internet protocol. Documents are encrypted, digitally signed, and acknowledged with an MDN receipt, and certificates must be exchanged and renewed on schedule to keep the connection live.
Walmart runs several supplier programs, and each has its own document flow. Warehouse suppliers ship to distribution centers, drop ship vendors fulfill Walmart.com orders directly to customers, DSD suppliers deliver to stores, and import suppliers follow Walmart's international sourcing requirements.
Walmart transmits purchase orders as 850 documents and expects an 855 Purchase Order Acknowledgment confirming the items, quantities, and ship dates you will fulfill. Changes from Walmart arrive as 860 PO Change documents, and every inbound document must be acknowledged with a 997.
Walmart requires an 856 Advance Ship Notice for every shipment, transmitted before the freight arrives at the distribution center. The ASN's hierarchy of shipment, order, pack, and item must match the GS1-128 (SSCC) labels on the pallets and cartons so receiving can scan and reconcile the load.
Walmart matches each 810 Invoice against the original purchase order and the ASN before approving payment. Payment detail arrives as an 820 Remittance Advice, and documents that fail Walmart's validation are reported back as an 824 Application Advice.
We support all required and optional EDI transaction sets for Walmart supplier compliance.
Connect your Walmart EDI directly to your preferred ERP, Accounting, eCommerce, or WMS software.
"From the very beginning, their team demonstrated deep technical expertise and a clear understanding of retail compliance requirements. They worked closely with ours to ensure smooth mapping, testing, and validation across all required documents including POs, ASNs, invoices, and acknowledgements. What stood out most was their hands-on support during integration into our ERP system — they took the time to understand our workflows and customized the setup to ensure everything functioned properly with minimal disruption. If you are looking for a reliable EDI partner, I highly recommend Infocon Systems."
"Overall, our experience with Infocon Systems WebEDI has been very positive. The platform has improved the accuracy and efficiency of our order processing, reduced manual work, and provided strong reliability. Their support and communication set them apart. They're attentive, professional, and truly care about customer satisfaction. It's been a great partnership, of 20 plus years, and we're confident continuing to work with them."
Get a free consultation and see how Infocon Systems can get you fully compliant with Walmart's EDI requirements, with no disruption to your operations.
Walmart requires suppliers to support a core set of EDI transaction sets, including the 850 (Purchase Order), 855 (Purchase Order Acknowledgment), 856 (Advance Ship Notice), 810 (Invoice), and 997 (Functional Acknowledgment). Depending on your supplier program, Walmart may also use the 824 (Application Advice), 820 (Remittance Advice), 846 (Inventory Advice), 852 (Product Activity Data), 860 (PO Change), and 812 (Credit/Debit Adjustment). Infocon Systems configures and maps every transaction set Walmart requires for your program as part of a fully managed Walmart EDI setup.
Infocon Systems typically has your Walmart connection, document maps, and ERP integration ready within days. The remaining time depends on Walmart's own testing and approval steps, which Infocon Systems coordinates on your behalf. Because Infocon Systems already maintains Walmart-compliant maps and connectivity, the testing cycle stays short and you can start trading as soon as Walmart approves the connection.
AS2 (Applicability Statement 2) is a secure internet protocol that encrypts and digitally signs EDI documents during transmission and confirms delivery with a signed receipt. Walmart uses AS2 as its standard connection method for supplier EDI because it is reliable, tamper-proof, and does not depend on a third-party network. Infocon Systems hosts and manages the AS2 connection for you, including certificate exchange, renewals, and connectivity testing with Walmart.
Yes. Infocon Systems integrates Walmart EDI with any ERP system, using an API or file-based connection depending on the platform. We build custom maps that convert Walmart purchase orders, ASNs, and invoices into your ERP's native format and back again. Whether you run SAP, NetSuite, Microsoft Dynamics, QuickBooks, Sage, Acumatica, or any other platform, Infocon Systems eliminates manual data entry across your entire Walmart document workflow.
Yes. Infocon Systems supports warehouse (distribution center) suppliers, drop ship vendors (DSV), direct store delivery (DSD) suppliers, and import suppliers. Each program has its own document flow and fulfillment requirements, and Infocon Systems configures your setup to match the program you are on. If you later add a second program, such as DSV alongside warehouse replenishment, Infocon Systems extends the same connection rather than starting over.
GS1-128 labels are standardized shipping labels that carry a Serial Shipping Container Code (SSCC) barcode along with other shipment data. Walmart requires GS1-128 labels on inbound cases and pallets so that each shipping unit can be scanned at the distribution center and matched to the 856 Advance Ship Notice. Infocon Systems generates the SSCC numbers, builds them into your ASN, and can produce the GS1-128 labels so that the physical shipment and the electronic document always match.
OTIF (On Time In Full) is Walmart's supplier delivery scorecard. It measures whether purchase orders arrive within the scheduled window and in the quantities Walmart ordered. Accurate, timely EDI documents support strong OTIF results: the 855 confirms what you will ship, the 856 tells Walmart what is actually on the truck before it arrives, and both must line up with the original 850. Infocon Systems makes sure these documents are generated from your real order and shipment data and transmitted on schedule.