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# AWS::Comprehend::Flywheel EntityTypesListItem
<a name="aws-properties-comprehend-flywheel-entitytypeslistitem"></a>

An entity type within a labeled training dataset that Amazon Comprehend uses to train a custom entity recognizer.

## Syntax
<a name="aws-properties-comprehend-flywheel-entitytypeslistitem-syntax"></a>

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

### JSON
<a name="aws-properties-comprehend-flywheel-entitytypeslistitem-syntax.json"></a>

```
{
  "[Type](#cfn-comprehend-flywheel-entitytypeslistitem-type)" : String
}
```

### YAML
<a name="aws-properties-comprehend-flywheel-entitytypeslistitem-syntax.yaml"></a>

```
  [Type](#cfn-comprehend-flywheel-entitytypeslistitem-type): String
```

## Properties
<a name="aws-properties-comprehend-flywheel-entitytypeslistitem-properties"></a>

`Type`  <a name="cfn-comprehend-flywheel-entitytypeslistitem-type"></a>
An entity type within a labeled training dataset that Amazon Comprehend uses to train a custom entity recognizer.  
Entity types must not contain the following invalid characters: \$1n (line break), \$1\$1n (escaped line break, \$1r (carriage return), \$1\$1r (escaped carriage return), \$1t (tab), \$1\$1t (escaped tab), and , (comma).  
*Required*: Yes  
*Type*: String  
*Pattern*: `^(?![^\n\r\t,]*\\n|\\r|\\t)[^\n\r\t,]+$`  
*Minimum*: `1`  
*Maximum*: `64`  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)