---
title: "Correction"
description: "a correction of a fact already written: it names the fact it replaces and why, so a read as of a date before it still shows the old fact and a reader of the stream tells a new fact from a corrected one; the fact corrected no longer stands"
section: concepts
address: /concepts/correction
contract: 0476e35e6e275db5
---

# Correction

a correction of a fact already written: it names the fact it replaces and why, so a read as of a date before it still shows the old fact and a reader of the stream tells a new fact from a corrected one; the fact corrected no longer stands

[figure: Correction is a fact at follows scope. The drawing shows its fields and the objects that they point at.]

| property | value |
|---|---|
| kind | fact |
| scope | follows |
| key | the fact it replaces |
| store | postgres |
| family | record |



## Fields


| field | type | required | note |
|---|---|---|---|
| `replaces` | `id` | yes | the id of the fact corrected |
| `kind` | `text` | yes | the kind of the fact corrected |
| `reason` | `text` | yes | why it no longer stands, in plain words |
| `rule` | `text` | no | the rule the correction applies, where one does |



## Routes that use it
No route takes or returns Correction directly. The record holds it, and the objects that point at it reach it.