# Corrections

URL: /products/data/corrections · Id: `capability:corrections`

> Corrections fix one record of a Dataset in place, keep the value it replaced, and tell every Customer who read it.

Corrections fix one record of a [Dataset](/business/nouns/dataset) in place, keep the value it replaced, and tell every [Customer](/business/nouns/customer) who read it.

## Contract
Status `planned`. A correction fixes one record that was wrong when it was served, with the reason and the [Source](/business/nouns/source) that shows the right value. The record keeps the value it replaced, and every Customer that read the wrong value hears about it.

| Proposed | Holds |
| --- | --- |
| `Thing.correct` | The record, the field, the right value, the reason and the evidence |
| `Thing.corrected` | The [Event](/business/nouns/event): each Customer's change feed and webhooks carry it |

A correction is not a refresh: a refresh records that the world changed, and a correction records that the Dataset was wrong. A served value later corrected can count against the Dataset's quality terms.

## Verbs
None.

## Interfaces
None.

## Example
Ratebook served a 7.25% rate for an address that sits in a district with an extra 0.5%. The correction records 7.75% with the district's ordinance as evidence, and the 14 Customers who looked it up get the `Thing.corrected` Event.