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# AWS::IoTTwinMaker::Entity DataType
<a name="aws-properties-iottwinmaker-entity-datatype"></a>

The entity data type.

## Syntax
<a name="aws-properties-iottwinmaker-entity-datatype-syntax"></a>

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

### JSON
<a name="aws-properties-iottwinmaker-entity-datatype-syntax.json"></a>

```
{
  "[AllowedValues](#cfn-iottwinmaker-entity-datatype-allowedvalues)" : [ DataValue, ... ],
  "[NestedType](#cfn-iottwinmaker-entity-datatype-nestedtype)" : DataType,
  "[Relationship](#cfn-iottwinmaker-entity-datatype-relationship)" : Relationship,
  "[Type](#cfn-iottwinmaker-entity-datatype-type)" : String,
  "[UnitOfMeasure](#cfn-iottwinmaker-entity-datatype-unitofmeasure)" : String
}
```

### YAML
<a name="aws-properties-iottwinmaker-entity-datatype-syntax.yaml"></a>

```
  [AllowedValues](#cfn-iottwinmaker-entity-datatype-allowedvalues): 
    - DataValue
  [NestedType](#cfn-iottwinmaker-entity-datatype-nestedtype): 
    DataType
  [Relationship](#cfn-iottwinmaker-entity-datatype-relationship): 
    Relationship
  [Type](#cfn-iottwinmaker-entity-datatype-type): String
  [UnitOfMeasure](#cfn-iottwinmaker-entity-datatype-unitofmeasure): String
```

## Properties
<a name="aws-properties-iottwinmaker-entity-datatype-properties"></a>

`AllowedValues`  <a name="cfn-iottwinmaker-entity-datatype-allowedvalues"></a>
The allowed values.  
*Required*: No  
*Type*: Array of [DataValue](aws-properties-iottwinmaker-entity-datavalue.md)  
*Minimum*: `0`  
*Maximum*: `50`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`NestedType`  <a name="cfn-iottwinmaker-entity-datatype-nestedtype"></a>
The nested type.  
*Required*: No  
*Type*: [DataType](#aws-properties-iottwinmaker-entity-datatype)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Relationship`  <a name="cfn-iottwinmaker-entity-datatype-relationship"></a>
The relationship.  
*Required*: No  
*Type*: [Relationship](aws-properties-iottwinmaker-entity-relationship.md)  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Type`  <a name="cfn-iottwinmaker-entity-datatype-type"></a>
The entity type.  
*Required*: No  
*Type*: String  
*Allowed values*: `RELATIONSHIP | STRING | LONG | BOOLEAN | INTEGER | DOUBLE | LIST | MAP`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`UnitOfMeasure`  <a name="cfn-iottwinmaker-entity-datatype-unitofmeasure"></a>
The unit of measure.  
*Required*: No  
*Type*: String  
*Pattern*: `.*`  
*Minimum*: `1`  
*Maximum*: `256`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)