Skip to content
    Back to Blog
    Walmart7 minFebruary 9, 2026

    Walmart ASN Requirements: Avoid Chargebacks and Delays

    Complete guide to Walmart's Advanced Shipping Notice (ASN) requirements, including EDI formatting, timing, accuracy standards, and common ASN errors.

    Walmart ASN (Advanced Shipping Notice) Guide

    An Advanced Shipping Notice (ASN) is an electronic notification sent to Walmart before your shipment arrives. Incorrect or late ASNs result in chargebacks and delayed receiving.

    What Is an ASN?

    The ASN tells Walmart:

    • What you're shipping (items, quantities, UPCs)
    • When it will arrive (expected delivery date)
    • How it's being shipped (carrier, tracking, BOL number)
    • Where it's going (DC, store number)

    ASN Timing Requirements

    Shipment TypeASN DuePenalty for Late ASN
    Collect (Walmart arranges)Before pickup$500+ per occurrence
    Prepaid (you arrange)24 hours before delivery$500+ per occurrence
    ImportPer PO termsVaries

    ASN Accuracy Requirements

    • SKU accuracy: Must match PO exactly
    • Quantity accuracy: Must match physical shipment
    • Carton count: Must match actual carton count
    • Weight: Must match actual weight (within tolerance)
    • BOL number: Must match carrier's BOL

    Common ASN Errors

    ErrorImpactPrevention
    Missing ASNChargeback + delayed receivingAutomate ASN generation
    Wrong quantitiesChargeback (in-full violation)Verify counts before sending
    Late ASNChargebackSend immediately after shipping
    Wrong DC/storeShipment refusedVerify routing guide
    Wrong BOL numberReceiving delaysConfirm with carrier

    ASN Best Practices

    1. Automate ASN generation — Integrate your ERP/WMS with Walmart's EDI system
    2. Send ASN same day as ship — Don't wait until the next business day
    3. Verify accuracy — Cross-check ASN against physical shipment before sending
    4. Keep records — Archive all ASNs for chargeback disputes
    5. Monitor compliance — Track ASN accuracy in Walmart's Retail Link

    EDI Requirements

    Walmart uses EDI 856 for ASN transmission. Your options:

    • Direct EDI connection (requires EDI software)
    • EDI service provider (recommended for smaller suppliers)
    • Walmart's web portal (manual entry, limited)

    Need Walmart Logistics Support?

    Indray provides Walmart-compliant transportation with proper ASN coordination. Contact us for integrated Walmart logistics.

    Need help with your freight?

    24/7 dispatch and logistics support

    Ready to Ship?

    Get a competitive freight quote from Indray Inc. Call +1 908 864 2064 or request online.