---
title: "UndoInput"
description: "an action to undo"
section: concepts
address: /concepts/undoinput
contract: 0476e35e6e275db5
---

# UndoInput

an action to undo

[figure: UndoInput is a value at none scope. The drawing shows its fields and the objects that they point at.]

| property | value |
|---|---|
| kind | value |
| scope | none |
| key | none |
| store | none |
| family | harness |



## Fields


| field | type | required | note |
|---|---|---|---|
| `action` | `id` | yes |  |
| `reason` | `text` | yes |  |



## Routes that use it
- [`/v1/act/undo`](/reference/act/undo) takes it as input