eCommerce Platforms integration
Amazon EDI and API integration for vendors and sellers
A guide to connecting with Amazon as a first-party vendor through EDI or vendor APIs, and as a marketplace seller through the Selling Partner API.
Overview
Understanding Amazon integration
Who this is for: Brands and manufacturers selling to Amazon as first-party vendors through Vendor Central, and sellers listing on the Amazon marketplace.
Businesses sell through Amazon in two main ways, and the integration approach differs for each. First-party vendors sell products wholesale to Amazon, which then sells them to consumers. Vendors receive purchase orders from Amazon and respond with acknowledgments, ship notices, invoices and inventory updates. They can exchange these documents through EDI or through Amazon's vendor APIs, which are part of the Selling Partner API.
Third-party sellers list products directly on the Amazon marketplace. Their integration needs center on listings, inventory, orders and fulfillment, which are handled through the Selling Partner API rather than EDI.
For vendors, the order-to-invoice cycle is tightly coupled to Amazon's fulfillment network. Shipment information must match the physical cartons and labels arriving at Amazon facilities, and acknowledgments and invoices must align with the original purchase order. Amazon requires vendors to complete testing before trading in production. Choosing between EDI and APIs usually depends on what a vendor's existing systems and partners already support.
Workflows
Typical Amazon business workflows
Vendor order-to-invoice (first party)
- 1Receive purchase order
- 2Acknowledge the order
- 3Ship to Amazon facility
- 4Send ship notice
- 5Send invoice
Marketplace seller (third party)
- 1Publish listings and stock
- 2Receive marketplace orders
- 3Fulfill or use Amazon fulfillment
- 4Confirm shipment
- 5Reconcile settlements
Documents and APIs
Common Amazon transactions
Documents commonly exchanged with Amazon, based on the public sources listed below. Exact requirements depend on your program, so always confirm against Amazon's current implementation guide.
| Document | Name | Direction | Purpose |
|---|---|---|---|
| 850 | Purchase Order | From Amazon | Amazon orders products from the vendor. |
| 855 | Purchase Order Acknowledgment | To Amazon | The vendor accepts, rejects or backorders items. |
| 856 | Advance Ship Notice | To Amazon | Describes shipments to Amazon facilities. |
| 810 | Invoice | To Amazon | Bills Amazon for shipped products. |
| 846 | Inventory Inquiry/Advice | To Amazon | Shares inventory availability where required. |
| SP-API | Selling Partner API (vendor and seller) | Both directions | API alternative for vendor orders, shipments and invoices, and the standard interface for marketplace sellers. |
Connectivity
How companies connect
AS2
Vendors can exchange EDI documents with Amazon over AS2 using connection details issued during setup.
SFTP or VAN
Some vendors connect through SFTP or an EDI service provider instead of a direct AS2 link.
Selling Partner API
Vendors and sellers can integrate through Amazon's APIs, which suit companies already building API-based integrations.
Challenges
Common integration challenges
Choosing EDI or API
Vendors must decide whether EDI or the vendor APIs fit their systems, partners and in-house skills better.
Shipment and label accuracy
Ship notices must match the cartons and labels that arrive at Amazon facilities.
Acknowledgment discipline
Purchase orders need timely and accurate acknowledgments so Amazon can plan inventory.
Vendor and seller differences
Companies selling as both vendor and seller manage two different integration models.
How ECOM helps
How ECOM can support your Amazon integration
EDI Integration
Exchange vendor EDI documents with Amazon and integrate them with your ERP.
ProductPRISM-SCV
Monitor acknowledgments, ship notices and invoices for every Amazon order.
ERP integration options
ECOM integrates Amazon vendor documents and marketplace data with your ERP, so Amazon purchase orders and marketplace orders follow the same fulfillment and invoicing processes as your other channels.
Visibility and exception management
PRISM-SCV, ECOM's supply chain visibility product, is designed to follow each Amazon document from receipt to response and flag late or missing documents and mismatches, so your team can resolve exceptions before they affect the relationship.
Explore PRISM-SCVAmazon integration FAQs
Does Amazon require EDI from vendors?
Amazon offers vendors a choice of EDI or its vendor APIs within the Selling Partner API. Smaller vendors may also work through Vendor Central directly. The right choice depends on your systems and volumes.
What is the difference between Amazon vendor and seller integration?
Vendors sell wholesale to Amazon and exchange purchase orders, ship notices and invoices. Sellers list products on the marketplace and integrate listings, inventory and orders through the Selling Partner API.
Which EDI documents do Amazon vendors usually exchange?
Commonly cited documents include the 850 purchase order, 855 acknowledgment, 856 ship notice, 810 invoice and 846 inventory advice. Confirm the list for your vendor account in Amazon's current documentation.
Can ECOM connect both our vendor and seller accounts?
Yes. ECOM can integrate vendor EDI or APIs and marketplace seller APIs with your ERP and monitor them together.
Is ECOM an Amazon partner?
This page is an integration guide and does not indicate a partnership with Amazon. ECOM builds integrations to Amazon's published specifications.
Sources and accuracy
This guide summarizes publicly available information as of October 2026. Amazon sets its own requirements and can change them at any time; your Amazon implementation guide, supplier portal or account contact is the authoritative source for your program.
- Amazon Selling Partner API documentation Official Amazon source
- Orderful, Amazon Vendor Central EDI Third-party source
Amazon is a trademark of its owner. Its mention does not imply endorsement of, or a partnership with, ECOM Specialist.
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Wayfair EDI
A guide for home goods suppliers connecting with Wayfair, covering dropship and CastleGate flows, inventory feeds, labeling and ERP integration.
Request Amazon integration assistance
Tell us about your Amazon program, documents and ERP. We will outline the connection, mapping and testing plan.