---
title: "Reason"
description: "one link of a chain of reasons"
section: concepts
address: /concepts/reason
contract: 0476e35e6e275db5
---

# Reason

one link of a chain of reasons

[figure: Reason 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 |
|---|---|---|---|
| `unit` | [UnitRef](/concepts/unitref) | yes |  |
| `state` | [Readiness](/concepts/readiness) | yes |  |
| `because` | [UnitRef](/concepts/unitref) | no |  |



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