CGetChargeback
Costco·Accounts Payable / Invoicing

Costco: PO / invoice data mismatch

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

What this deduction means

The 810 invoice does not line up with the purchase order or ASN: wrong quantities, prices, or item identifiers. Data mismatches across the 850, 856 and 810 are among the most common causes of Costco deductions.

Typical penalty: Roughly 1 to 3% of PO value per mismatch incident

Common causes

  • Invoice quantities or prices differing from the PO
  • Item identifiers on the invoice not matching Costco's item file
  • Invoice built before shipment corrections were reflected

How to prevent Costco's PO / invoice data mismatch

  • Three-way match PO (850), ASN (856) and invoice (810) before transmission
  • Invoice from confirmed shipped quantities at PO prices
  • Sync item identifiers with Costco's item file on every new item setup

Related EDI transactions

EDI 810EDI 850EDI 856

Source

Crstl, Costco EDI Requirements: Supplier Compliance Guide (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 PO / invoice data mismatch?

The 810 invoice does not line up with the purchase order or ASN: wrong quantities, prices, or item identifiers. Data mismatches across the 850, 856 and 810 are among the most common causes of Costco deductions.

How much does Costco's PO / invoice data mismatch cost?

Typical penalty: Roughly 1 to 3% of PO value per mismatch incident

How do I prevent Costco's PO / invoice data mismatch?

Three-way match PO (850), ASN (856) and invoice (810) before transmission Invoice from confirmed shipped quantities at PO prices Sync item identifiers with Costco's item file on every new item setup

Keep going

Complete guide: Costco's PO / invoice data mismatchRoot 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

ASN / EDI 856Code ASN-LATE: Late or inaccurate ASNAccounts Payable / ShortageCode QTY: Quantity discrepancyLabelingCode LABEL-GS1: Incorrect GS1-128 / SSCC labelOn-Time DeliveryCode LATE-DELIVERY: Late or refused deliveryPackaging / PalletCode PALLET: Pallet configuration violation