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::StepFunctions::StateMachineAlias RoutingConfigurationVersion
<a name="aws-properties-stepfunctions-statemachinealias-routingconfigurationversion"></a>

The state machine version to which you want to route the execution traffic.

## Syntax
<a name="aws-properties-stepfunctions-statemachinealias-routingconfigurationversion-syntax"></a>

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

### JSON
<a name="aws-properties-stepfunctions-statemachinealias-routingconfigurationversion-syntax.json"></a>

```
{
  "[StateMachineVersionArn](#cfn-stepfunctions-statemachinealias-routingconfigurationversion-statemachineversionarn)" : String,
  "[Weight](#cfn-stepfunctions-statemachinealias-routingconfigurationversion-weight)" : Integer
}
```

### YAML
<a name="aws-properties-stepfunctions-statemachinealias-routingconfigurationversion-syntax.yaml"></a>

```
  [StateMachineVersionArn](#cfn-stepfunctions-statemachinealias-routingconfigurationversion-statemachineversionarn): String
  [Weight](#cfn-stepfunctions-statemachinealias-routingconfigurationversion-weight): Integer
```

## Properties
<a name="aws-properties-stepfunctions-statemachinealias-routingconfigurationversion-properties"></a>

`StateMachineVersionArn`  <a name="cfn-stepfunctions-statemachinealias-routingconfigurationversion-statemachineversionarn"></a>
The Amazon Resource Name (ARN) that identifies one or two state machine versions defined in the routing configuration.  
If you specify the ARN of a second version, it must belong to the same state machine as the first version.  
*Required*: Yes  
*Type*: String  
*Minimum*: `1`  
*Maximum*: `2048`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`Weight`  <a name="cfn-stepfunctions-statemachinealias-routingconfigurationversion-weight"></a>
The percentage of traffic you want to route to the state machine version. The sum of the weights in the routing configuration must be equal to 100.  
*Required*: Yes  
*Type*: Integer  
*Minimum*: `0`  
*Maximum*: `100`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)