This is the new *Amazon CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [Amazon CloudFormation User Guide](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/Welcome.html).

# AWS::AgentRegistry::RegistryRecord CustomDescriptor
<a name="aws-properties-agentregistry-registryrecord-customdescriptor"></a>

Descriptor that defines the content of a custom registry record.

## Syntax
<a name="aws-properties-agentregistry-registryrecord-customdescriptor-syntax"></a>

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

### JSON
<a name="aws-properties-agentregistry-registryrecord-customdescriptor-syntax.json"></a>

```
{
  "[Data](#cfn-agentregistry-registryrecord-customdescriptor-data)" : {{String}}
}
```

### YAML
<a name="aws-properties-agentregistry-registryrecord-customdescriptor-syntax.yaml"></a>

```
  [Data](#cfn-agentregistry-registryrecord-customdescriptor-data): {{String}}
```

## Properties
<a name="aws-properties-agentregistry-registryrecord-customdescriptor-properties"></a>

`Data`  <a name="cfn-agentregistry-registryrecord-customdescriptor-data"></a>
The custom descriptor content, serialized as descriptor payload data.  
*Required*: No  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `102400`  
*Update requires*: [No interruption](https://docs.amazonaws.cn/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)