---
title: "Attempt"
description: "one try of a job, a run keyed by the unit and the attempt's number"
section: concepts
address: /concepts/attempt
contract: 0476e35e6e275db5
---

# Attempt

one try of a job, a run keyed by the unit and the attempt's number

[figure: Attempt 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 |
|---|---|---|---|
| `number` | `count` | yes |  |
| `run` | `id` | yes |  |
| `outcome` | `one of done \| failed \| stopped` | yes |  |
| `failure_class` | [FailureClass](/concepts/failureclass) | no | only a failure of the unit's own class counts against it |



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