---
title: "Purchase Fixed/Activity Project (USER_DATA)"
method: POST
path: "/sapi/v1/lending/customizedFixed/purchase"
tags: ["Savings"]
---

# Purchase Fixed/Activity Project (USER_DATA)

`POST /sapi/v1/lending/customizedFixed/purchase`

Weight(IP): 1

## Query parameters

- `projectId` string, required
- `lot` string, required
- `recvWindow` integer
- `timestamp` integer, required
- `signature` string, required

## Response `200`

Generated Purchase Id

- object
  - `purchaseId` string, required

## Other responses

- `400` — Bad Request
- `401` — Unauthorized Request

## Changes

- **2021-10-25** `a484ce871a72` — 2 breaking, 5 info
  - for the `query` request parameter `recvWindow`, the type/format was changed from `integer`/`` to `integer`/`int64`
  - for the `query` request parameter `timestamp`, the type/format was changed from `integer`/`` to `integer`/`int64`
  - the response property `code` became required for the status `400`
  - the response property `code` became required for the status `401`
  - …3 more

[Change history](https://skmtc.dev/binance/apis/binance-public-spot-api/changes/sapi/v1/lending/customizedFixed/purchase/post.md)

---

[API](https://skmtc.dev/binance/apis/binance-public-spot-api.md) · [All operations](https://skmtc.dev/binance/apis/binance-public-spot-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/binance/binance-public-spot-api/revisions/0dd2f133e12d/schema)