Overview

Amazon has rolled out a refreshed version of the Fulfillment Outbound API (v2020‑07‑01) that introduces a deliveryOffers operation and modifies the payloads of getFulfillmentOrder and createFulfillmentOrder. Launched in early 2024, the update gives Multi‑Channel Fulfillment (MCF) sellers real‑time visibility into Amazon’s delivery choices for any SKU that can ship to a U.S. ZIP code or be located via a U.S. IP address. Sellers using the API for automated routing must adapt their code to capture the new fields and to process the expanded response structures.

Key Points

• Dynamic deliveryOffers endpoint — Returns live Amazon shipping options such as Same‑Day, One‑Day, and Two‑Day for a given SKU when a destination ZIP or IP is supplied, allowing instant price and ETA calculations.
• Expanded getFulfillmentOrder payload — Includes a deliveryOffer array that enumerates every applicable service, its estimated window, and any fees tied to the specific order.
• createFulfillmentOrder now accepts deliveryOfferId — Enables sellers to request a precise delivery service (e.g., One‑Day) by passing the identifier obtained from the deliveryOffers call.
• Optional field extensions — Elements like shipFromLocationId and fulfillmentPolicy now support extra enumeration values that correspond to the newly exposed delivery choices.
• Higher rate limits — The deliveryOffers operation can be called up to 10 times per second, twice the previous ceiling, to accommodate high‑volume MCF workflows.
• New error codes — Errors such as DeliveryOfferNotFound and InvalidZipOrIp give clearer diagnostics when a request cannot be fulfilled.

How the Updated Outbound API Works

1. Request delivery offers —

   • Invoke the deliveryOffers operation with a valid SKU, a destination ZIP (e.g., “30301”) or a U.S. IP address (e.g., “198.51.100.23”), and optionally a quantity.