Amazon (Vendor Central) deduction codes — triggers, evidence, windows.

What triggers it

EDI 856 ASN did not match the receipt at Amazon FC — wrong carton count, wrong UPC, wrong unit count per carton, or wrong PO reference.

Evidence to dispute

ASN payload (raw EDI), packing list, BOL, FC receiving record from Vendor Central.

Filing window

60 days from chargeback issue date in Vendor Central

Typical success rate

60–75% when ASN payload reconciles to packing list

Root-cause fix

Generate ASN from the packing-list system, not the order system; freeze ASN at trailer-seal; QA random ASNs weekly against actual loads.

Source: Amazon Vendor Operational Performance — ASN Compliance

What triggers it

Shipment confirmed on PO did not arrive at the FC by the requested window. Amazon's window is tighter than most retailers.

Evidence to dispute

Carrier appointment confirmation, GPS/ELD record, FC arrival timestamp, and any FC-acknowledged exception.

Filing window

60 days from chargeback issue date in Vendor Central

Typical success rate

40–55% — most are valid; the disputable ones are FC dock backups and weather exceptions

Root-cause fix

Confirm PO with achievable ship-window only; pre-stage for FCs that consistently dock-block; never confirm a PO you can't meet.

Source: Amazon Vendor Operational Performance — On-Time Delivery

What triggers it

Item arrived without required prep (poly bag, label, suffocation warning, bubble wrap on glass, etc.) per Amazon's item-level prep requirements.

Evidence to dispute

Photos of finished pack-out, prep specification per ASIN from Vendor Central, and any prep-instruction emails from Vendor Manager.

Filing window

60 days from chargeback issue date in Vendor Central

Typical success rate

30–45% — mostly valid; biggest wins are scope disputes (FC applied a prep requirement that didn't apply to that ASIN)

Root-cause fix

Maintain prep-spec by ASIN in a single sheet; QA pack-out line against prep spec; pay for retailer prep only when in-house prep is more expensive.

Source: Amazon Vendor Central — Item Prep Requirements

What triggers it

Amazon FC's receipt shows fewer units than the invoice. Amazon's shortage claims are aggressive and often filed after the dispute window starts.

Evidence to dispute

Packing list, BOL, weighed shipment record, ASN payload, trailer seal, and any 'received in good order' carrier note.

Filing window

Typically 30 days from claim date (varies by FC)

Typical success rate

55–70% when shipment was palletized and weighed at origin

Root-cause fix

Weigh every outbound trailer; reconcile packing-list to ASN before transmission; never ship floor-load to Amazon FCs.

Source: Amazon Vendor Central — Shortage Claims process

What triggers it

Amazon deducted a marketing allowance (MDF, damage allowance, freight allowance, etc.) at a rate or amount that doesn't match the negotiated terms.

Evidence to dispute

Signed Vendor Agreement showing co-op terms, the original ASN of the deduction, and prior remittance to confirm the allowance wasn't already paid.

Filing window

60 days from deduction date

Typical success rate

70–85% when Vendor Agreement is current and signed

Root-cause fix

Re-sign Vendor Agreement annually; reconcile co-op deductions to contract terms quarterly; flag any deduction outside agreed rate immediately.

Source: Amazon Vendor Negotiation Manual; signed Vendor Agreement

What triggers it

Amazon's cost on file does not match the invoice — usually after a cost change wasn't propagated through Vendor Central, or after an Amazon-initiated cost reduction request.

Evidence to dispute

Cost-change confirmation in Vendor Central, signed cost agreement, and the matching PO.

Filing window

60 days from deduction date

Typical success rate

65–80% when cost change was acknowledged in Vendor Central

Root-cause fix

Push every cost change through Vendor Central, never via Vendor Manager email alone; reconcile Amazon cost-on-file to internal price list weekly.

Source: Amazon Vendor Central — Cost Change process