---
title: "Changes to Create a book transfer routine"
method: POST
path: "/v1/routines/book"
---

# Changes to Create a book transfer routine

`POST /v1/routines/book`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 2 revisions.

- **2026-11-03** `1f0b2e859333`: 1 info

## Changes

- **2026-11-03** `1f0b2e859333`: 1 info
  - added the new optional `header` request parameter `Idempotency-Key`

---

[Operation](https://skmtc.dev/astra/apis/astra-developer-api/docs/v1/routines/book/post.md) - [API](https://skmtc.dev/astra/apis/astra-developer-api.md) - [Page](https://skmtc.dev/astra/apis/astra-developer-api/changes/v1/routines/book/post)