---
title: "Undo the check-in of a guest to a class"
method: PUT
path: "/classes/{class_id}/registrations/{registration_id}/undo_sign_in"
---

# Undo the check-in of a guest to a class

`PUT /classes/{class_id}/registrations/{registration_id}/undo_sign_in`

Use this API to undo the guest's check-in to your class. You can only undo the check-in of guests who are already checked in.

You must specify the `class_id` and the `registration_id` of the guest for whom you want to undo the check-in.

## Path parameters

- `class_id` integer, required
- `registration_id` integer, required

## Response `200`

200

- object
  - `error` unknown

## Other responses

- `400` — 400

---

[API](https://skmtc.dev/zenoti/apis/zenoti-authentication.md) · [All operations](https://skmtc.dev/zenoti/apis/zenoti-authentication/llms.txt) · [OpenAPI document](https://skmtc.dev/zenoti/apis/zenoti-authentication/revisions/e628f892391a?raw)