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

# AWS::IoT::ThingPrincipalAttachment
<a name="aws-resource-iot-thingprincipalattachment"></a>

Use the `AWS::IoT::ThingPrincipalAttachment` resource to attach a principal (an X.509 certificate or another credential) to a thing.

For more information about working with AWS IoT things and principals, see [Authorization](https://docs.aws.amazon.com/iot/latest/developerguide/authorization.html) in the *AWS IoT Developer Guide*.

## Syntax
<a name="aws-resource-iot-thingprincipalattachment-syntax"></a>

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

### JSON
<a name="aws-resource-iot-thingprincipalattachment-syntax.json"></a>

```
{
  "Type" : "AWS::IoT::ThingPrincipalAttachment",
  "Properties" : {
      "[Principal](#cfn-iot-thingprincipalattachment-principal)" : String,
      "[ThingName](#cfn-iot-thingprincipalattachment-thingname)" : String,
      "[ThingPrincipalType](#cfn-iot-thingprincipalattachment-thingprincipaltype)" : String
    }
}
```

### YAML
<a name="aws-resource-iot-thingprincipalattachment-syntax.yaml"></a>

```
Type: AWS::IoT::ThingPrincipalAttachment
Properties:
  [Principal](#cfn-iot-thingprincipalattachment-principal): String
  [ThingName](#cfn-iot-thingprincipalattachment-thingname): String
  [ThingPrincipalType](#cfn-iot-thingprincipalattachment-thingprincipaltype): String
```

## Properties
<a name="aws-resource-iot-thingprincipalattachment-properties"></a>

`Principal`  <a name="cfn-iot-thingprincipalattachment-principal"></a>
The principal, which can be a certificate ARN (as returned from the `CreateCertificate` operation) or an Amazon Cognito ID.  
*Required*: Yes  
*Type*: String  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`ThingName`  <a name="cfn-iot-thingprincipalattachment-thingname"></a>
The name of the AWS IoT thing.  
*Required*: Yes  
*Type*: String  
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)

`ThingPrincipalType`  <a name="cfn-iot-thingprincipalattachment-thingprincipaltype"></a>
Property description not available.  
*Required*: No  
*Type*: String  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

## Examples
<a name="aws-resource-iot-thingprincipalattachment--examples"></a>

### 
<a name="aws-resource-iot-thingprincipalattachment--examples--"></a>

The following example attaches a principal to a thing.

#### JSON
<a name="aws-resource-iot-thingprincipalattachment--examples----json"></a>

```
{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Parameters": {
    "NameParameter": {
      "Type": "String",
      "Description": "Name of the IoT Thing to attach the principal to"
    }
  },
  "Resources": {
    "MyThingPrincipalAttachment": {
      "Type": "AWS::IoT::ThingPrincipalAttachment",
      "Properties": {
        "ThingName": {
          "Ref": "NameParameter"
        },
        "Principal": "arn:aws:iot:ap-southeast-2:123456789012:cert/a1234567b89c012d3e4fg567hij8k9l01mno1p23q45678901rs234567890t1u2"
      }
    }
  }
}
```

#### YAML
<a name="aws-resource-iot-thingprincipalattachment--examples----yaml"></a>

```
AWSTemplateFormatVersion: '2010-09-09'
Resources:
  MyThingPrincipalAttachment:
    Type: AWS::IoT::ThingPrincipalAttachment
    Properties:
      ThingName:
        Ref: NameParameter
      Principal: arn:aws:iot:ap-southeast-2:123456789012:cert/a1234567b89c012d3e4fg567hij8k9l01mno1p23q45678901rs234567890t1u2

Parameters:
  NameParameter:
    Type: String
```