---
title: "FailureClass"
description: "the class every reason of failure carries"
section: concepts
address: /concepts/failureclass
contract: 0476e35e6e275db5
---

# FailureClass

the class every reason of failure carries

[figure: FailureClass 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 | kernel |



## Fields


| field | type | required | note |
|---|---|---|---|
| `who` | `one of the unit's own \| the source's \| ours` | yes |  |
| `what` | `one of absent \| forbidden \| rate \| dependency down \| platform fault \| the unit's own` | yes |  |



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