CGetChargeback
Costco·ASN / EDI 856

Costco: Late or inaccurate ASN

Extracted from source, pending expert reviewLast verified: 2026-07-10

What this deduction means

Assessed when the 856 ASN is transmitted after the freight departs or doesn't match the physical shipment. Because Costco runs a cross-dock depot model, missing or wrong ASN data can hold freight at receiving and cascade delays to multiple club locations.

Typical penalty: Roughly $50 to $200 per incident; can also trigger shipping holds

Common causes

  • ASN sent after the truck left, or not at all
  • Carton/pallet hierarchy in the ASN not matching the physical load
  • ASN quantities differing from what was actually shipped

How to prevent Costco's Late or inaccurate ASN

  • Transmit the 856 before or as freight departs, never after
  • Generate the ASN from actual pick/pack scan data, not the PO
  • Monitor 997 acknowledgments so a rejected ASN is re-sent before arrival

Related EDI transactions

EDI 856EDI 997

Source

OrderEase: Guide to Costco EDI Compliance & Chargeback Prevention (secondary industry source) (Accessed 2026-07-10; pending official Costco Supplier Portal verification)

How we source and verify this data.

Frequently asked questions

What is Costco's Late or inaccurate ASN?

Assessed when the 856 ASN is transmitted after the freight departs or doesn't match the physical shipment. Because Costco runs a cross-dock depot model, missing or wrong ASN data can hold freight at receiving and cascade delays to multiple club locations.

How much does Costco's Late or inaccurate ASN cost?

Typical penalty: Roughly $50 to $200 per incident; can also trigger shipping holds

How do I prevent Costco's Late or inaccurate ASN?

Transmit the 856 before or as freight departs, never after Generate the ASN from actual pick/pack scan data, not the PO Monitor 997 acknowledgments so a rejected ASN is re-sent before arrival

Keep going

Complete guide: Costco's Late or inaccurate ASNRoot causes, financial impact, and a step-by-step prevention workflow in full.
Prevent Costco chargebacksThe pre-shipment checklist that stops the Costco deductions we track.
Costco vendor compliance guideHow Costco's program works end to end: scorecard, portal, and disputes.

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Related chargeback codes

LabelingCode LABEL-GS1: Incorrect GS1-128 / SSCC labelAccounts Payable / ShortageCode QTY: Quantity discrepancyAccounts Payable / InvoicingCode INVOICE-MATCH: PO / invoice data mismatchOn-Time DeliveryCode LATE-DELIVERY: Late or refused deliveryPackaging / PalletCode PALLET: Pallet configuration violation