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# AWS::ApplicationSignals::ServiceLevelObjective RollingInterval
<a name="aws-properties-applicationsignals-servicelevelobjective-rollinginterval"></a>

If the interval for this SLO is a rolling interval, this structure contains the interval specifications.

## Syntax
<a name="aws-properties-applicationsignals-servicelevelobjective-rollinginterval-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-applicationsignals-servicelevelobjective-rollinginterval-syntax.json"></a>

```
{
  "[Duration](#cfn-applicationsignals-servicelevelobjective-rollinginterval-duration)" : Integer,
  "[DurationUnit](#cfn-applicationsignals-servicelevelobjective-rollinginterval-durationunit)" : String
}
```

### YAML
<a name="aws-properties-applicationsignals-servicelevelobjective-rollinginterval-syntax.yaml"></a>

```
  [Duration](#cfn-applicationsignals-servicelevelobjective-rollinginterval-duration): Integer
  [DurationUnit](#cfn-applicationsignals-servicelevelobjective-rollinginterval-durationunit): String
```

## Properties
<a name="aws-properties-applicationsignals-servicelevelobjective-rollinginterval-properties"></a>

`Duration`  <a name="cfn-applicationsignals-servicelevelobjective-rollinginterval-duration"></a>
Specifies the duration of each rolling interval. For example, if `Duration` is `7` and `DurationUnit` is `DAY`, each rolling interval is seven days.  
*Required*: Yes  
*Type*: Integer  
*Minimum*: `1`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`DurationUnit`  <a name="cfn-applicationsignals-servicelevelobjective-rollinginterval-durationunit"></a>
Specifies the rolling interval unit.  
*Required*: Yes  
*Type*: String  
*Allowed values*: `MINUTE | HOUR | DAY | MONTH`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)