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# AWS::Redshift::ClusterParameterGroup Parameter
<a name="aws-properties-redshift-clusterparametergroup-parameter"></a>

Describes a parameter in a cluster parameter group.

## Syntax
<a name="aws-properties-redshift-clusterparametergroup-parameter-syntax"></a>

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

### JSON
<a name="aws-properties-redshift-clusterparametergroup-parameter-syntax.json"></a>

```
{
  "[ParameterName](#cfn-redshift-clusterparametergroup-parameter-parametername)" : String,
  "[ParameterValue](#cfn-redshift-clusterparametergroup-parameter-parametervalue)" : String
}
```

### YAML
<a name="aws-properties-redshift-clusterparametergroup-parameter-syntax.yaml"></a>

```
  [ParameterName](#cfn-redshift-clusterparametergroup-parameter-parametername): String
  [ParameterValue](#cfn-redshift-clusterparametergroup-parameter-parametervalue): String
```

## Properties
<a name="aws-properties-redshift-clusterparametergroup-parameter-properties"></a>

`ParameterName`  <a name="cfn-redshift-clusterparametergroup-parameter-parametername"></a>
The name of the parameter.  
*Required*: Yes  
*Type*: String  
*Maximum*: `2147483647`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`ParameterValue`  <a name="cfn-redshift-clusterparametergroup-parameter-parametervalue"></a>
The value of the parameter. If `ParameterName` is `wlm_json_configuration`, then the maximum size of `ParameterValue` is 8000 characters.  
*Required*: Yes  
*Type*: String  
*Maximum*: `2147483647`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)