Amazon Vendor EDI requirements
Amazon sends its Vendor Central suppliers purchase orders (850) by EDI and expects the acknowledgment (855) within 24 hours, then an advance ship notice (856) within 30 minutes of the truck leaving, and the invoice (810). ASN problems are charged 2% to 6% of the product cost, depending on your compliance rate. This applies to Amazon.com and Amazon.ca vendors.
The documents
| Document | Direction | What Amazon expects | Specification |
|---|---|---|---|
| 850 Purchase Order | From Amazon | The purchase order for Amazon’s fulfillment centres. | Read and validate |
| 855 Purchase Order Acknowledgment | To Amazon | Accept within 24 hours, backorders included; reject any order still on hold after 24 hours. Send an update within 48 hours of any change to quantity, price or dates. Never confirm more than was ordered. | Read and validate |
| 753 Request for Routing Instructions | To Amazon | Your request for routing instructions, for freight Amazon collects. | Read and validate |
| 754 Routing Instructions | From Amazon | Amazon’s routing instructions in reply. | Read and validate |
| 856 Ship Notice/Manifest | To Amazon | Required for every shipment, whatever its size or freight terms, in X12 5010 with an SSCC for each carton (MAN*GM). | Read and validate |
| 810 Invoice | To Amazon | Your invoice. Amazon.ca invoices are billed to Amazon.com.ca ULC in Toronto, with GST/HST, and QST for Québec vendors. | Read and validate |
| 846 Inventory Inquiry/Advice | To Amazon | Your inventory position. | Read and validate |
| 820 Payment Order/Remittance Advice | From Amazon | Amazon’s payment and remittance. | Read and validate |
ASN and label rules
- ASN timing: within 30 minutes of departure from your warehouse, or at least 6 hours before the carrier’s appointment at Amazon, whichever is sooner. It must reach Amazon before the appointment.
- Matching: Amazon matches your ASN to the carrier’s delivery notice by ARN, PRO or bill of lading number, so get the carrier’s PRO before you send it.
- Cartons: each carton carries a unique GS1 SSCC-18, in text and barcode, repeated in the ASN. A vendor live on the EDI 856 must use SSCC labels, not Amazon’s own carton codes.
- Acknowledgment: the order is acknowledged in the 855 through EDI, the API or Vendor Central; the 855 is what updates the order in Amazon’s system.
Chargebacks
| Violation | Charge |
|---|---|
| ASN problem (late, missing, structure mismatch), compliance above 95% | 2% of the product cost |
| Same, compliance from 70% to 95% | 4% of the product cost |
| Same, compliance below 70% | 6% of the product cost |
| Carton without a valid content label (U.S. vendors) | $5 per carton |
ASN rates as summarized by SPS Commerce (updated October 2, 2025); the carton label charge is from Amazon’s North American vendor manual (2016). A chargeback can be disputed within 30 days of the charge date, and a rejected dispute has a second 30-day window (SPS Commerce, February 21, 2024). Your vendor agreement is what applies.
Meeting these requirements with Weredi
Read Amazon’s specifications
8 of the documents above are published segment by segment, free, with a validator that checks your own file against them.
Build the 855, 856 and 810 from each order
Each 850 becomes your acknowledgment, ship notice and invoice without rekeying, with carton structures and SSCC labels for the 856.
See what Amazon charged back
On Weredi Plus, the deduction ledger matches each chargeback to its invoice and builds a bilingual dispute pack, inside the 30 days.
One flat price
From $199 CAD a month for Amazon and every other trading partner, with unlimited transactions.
How you connect
Amazon vendors set up EDI themselves in Vendor Central (vendorcentral.amazon.ca in Canada), choosing AS2, SFTP or a VAN, then send test documents. Weredi connects over AS2 or SFTP directly. This page covers Vendor Central (1P); Direct Fulfillment and Seller Central have their own rules.
Get your Amazon ASNs right before they cost you
Start a free 14-day trial with Amazon already added, no credit card.
Questions buyers ask
How long do I have to acknowledge an Amazon purchase order?
24 hours, including backordered items, with an 855 sent by EDI, the API or Vendor Central. Any change to quantity, price or dates needs an updated acknowledgment within 48 hours.
When is the ASN due to Amazon?
Within 30 minutes of the shipment leaving your warehouse, or at least 6 hours before the carrier’s appointment at Amazon, whichever is sooner. Every shipment needs one.
How much are Amazon ASN chargebacks?
2% of the product cost when your ASN compliance is above 95%, 4% from 70% to 95%, and 6% below 70%, according to SPS Commerce’s summary updated October 2, 2025. You have 30 days from the charge date to dispute.
Does this apply to Amazon.ca vendors?
Yes. Amazon’s North American vendor rules cover Amazon.com and Amazon.ca; Canadian vendors use vendorcentral.amazon.ca and invoice Amazon.com.ca ULC in Toronto. Direct Fulfillment and Seller Central are separate programs.
Sources
- Amazon, Selling Partner API, “Submit order acknowledgement” (updated September 2026)
- Amazon, Selling Partner API, “Bill-to party addresses” (updated September 2026)
- Amazon, “North American Vendor Shipment Preparation and Transportation Manual” (last updated September 1, 2016)
- SPS Commerce, “How Amazon’s ASN Chargebacks are Calculated” (updated October 2, 2025)
- SPS Commerce, “How to Dispute an Amazon Chargeback” (updated February 21, 2024)
- CData, “How to Set Up EDI with Amazon Vendor Central” (updated November 21, 2024)
Speak to an EDI expert today
Connect with one of our experienced EDI experts to learn how Weredi’s Modern EDI Platform can handle your company’s EDI needs.