---
title: "Update Checkout"
method: POST
path: "/checkout/{checkout_id}/update"
tags: ["Checkout"]
---

# Update Checkout

`POST /checkout/{checkout_id}/update`

Update a checkout.

## Path parameters

- `checkout_id` string, required

## Request body

- UpdateCheckoutRequest
  - `order_id` string — Identifies the order within the merchant's order management system that this transaction corresponds to. It is only returned in the response if included in the request.
  - `shipping_carrier` string, nullable — The shipping carrier used to ship the items.
  - `shipping_confirmation` string, nullable — The tracking number of the shipment.
  - `shipping` object, nullable — The shipping information. Required for scenarios where goods are shipped.
    - `address` object
      - `city` string — The name of the city.
      - `country` string — The abbreviated name of the country.
      - `line1` string — A U.S. street address.
      - `line2` string — The apartment number, floor or suite that complements the street address.
      - `state` string — The 2-letter postal abbreviation or full name of the U.S. state.
      - `zipcode` string — The 5-digit postal code of the address.
    - `email` string, nullable — The email address of the customer.
    - `name` object, nullable
      - `first` string — The first name of the customer.
      - `full` string — The full name of the customer, which must contain at least two words.
      - `last` string — The last name of the customer.
    - `phone_number` string, nullable — The phone number of the customer. It must be a valid U.S. phone number represented as a 10-digit string without any delimiters.

## Response `200`

HTTP 200 OK

## Other responses

- `400` — HTTP 400 Bad Request
- `401` — HTTP 401 Unauthorized
- `404` — HTTP 404 Not Found

---

[API](https://skmtc.net/affirm/apis/merchant-transaction-api.md) · [All operations](https://skmtc.net/affirm/apis/merchant-transaction-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/affirm/merchant-transaction-api/versions/f2f4252c946f/schema)