---
title: "Cancel order"
method: POST
path: "/orders/v1/cancel_order"
tags: ["CLOB"]
---

# Cancel order

`POST /orders/v1/cancel_order`

Cancel an order on the CLOB.

## Headers

- `X-SCX-SIGNED` string, required
- `X-SCX-TIMESTAMP` string, required

## Request body

- PostCancelOrderRequest
  - `clord_id` string — Client-provided order ID.
  - `order_id` string — Unique order identifier.
  - `symbol` string — The trading pair for the order.
  - `user` 'firms/F-{platform_code}/users/{participant_code}' | 'firms/F-{platform_code}/users/{account_label}' | 'firms/{zerohash}/users/{platform_code}' — Fully-qualified user. Format: `firms/F-{platform_code}/users/{participant_code}`. This value is case sensitive. ### Clearing House Designations * **USA:** 00SXCM (ZH Clearing House) * **EU:** ZHDSEU ### Prefunded Model * USD balances are ledgered directly to the participants on their CLOB account. * Participants will be credit checked against their available balance on the zerohash platform. * Accounts must be registed with the `prefunded` field as `true` on the `POST /accounts` endpoint. * Trade settlement is handled directly between participants and occurs instantly upon execution. ### Novated Model * Utilizes a central float account to manage the cumulative buying power of your customers. * USD balance is ledgeder to the platforms float account. * USD credit checks must be performed by the platform prior to order placement. * Accounts must be registed with the `prefunded` field as `false` on the `POST /accounts` endpoint. * Allows platforms to manage the buying power of their customers effectively, allowing for better operational efficiency.

## Response `200`

A successful response

- PostCancelOrderResponse

## Other responses

- `default` — An error occurred

---

[API](https://skmtc.net/zerohash/apis/zerohash-api.md) · [All operations](https://skmtc.net/zerohash/apis/zerohash-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/zerohash/zerohash-api/revisions/8b647d934363/schema)