# ExecutePolicy


Executes the specified policy. This can be useful for testing the design of your scaling policy.

## Request Parameters


 For information about the parameters that are common to all actions, see [Common Parameters](CommonParameters.md).

 ** AutoScalingGroupName **   
The name of the Auto Scaling group.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 255.  
Pattern: `[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*`   
Required: No

 ** BreachThreshold **   
The breach threshold for the alarm.  
Required if the policy type is `StepScaling` and not supported otherwise.  
Type: Double  
Required: No

 ** HonorCooldown **   
Indicates whether Amazon EC2 Auto Scaling waits for the cooldown period to complete before executing the policy.  
Valid only if the policy type is `SimpleScaling`. For more information, see [Scaling cooldowns for Amazon EC2 Auto Scaling](https://docs.amazonaws.cn/autoscaling/ec2/userguide/ec2-auto-scaling-scaling-cooldowns.html) in the *Amazon EC2 Auto Scaling User Guide*.  
Type: Boolean  
Required: No

 ** MetricValue **   
The metric value to compare to `BreachThreshold`. This enables you to execute a policy of type `StepScaling` and determine which step adjustment to use. For example, if the breach threshold is 50 and you want to use a step adjustment with a lower bound of 0 and an upper bound of 10, you can set the metric value to 59.  
If you specify a metric value that doesn't correspond to a step adjustment for the policy, the call returns an error.  
Required if the policy type is `StepScaling` and not supported otherwise.  
Type: Double  
Required: No

 ** PolicyName **   
The name or ARN of the policy.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 1600.  
Pattern: `[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*`   
Required: Yes

## Errors


For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

 ** ResourceContention **   
You already have a pending update to an Amazon EC2 Auto Scaling resource (for example, an Auto Scaling group, instance, or load balancer).    
 ** message **   

HTTP Status Code: 500

 ** ScalingActivityInProgress **   
The operation can't be performed because there are scaling activities in progress.    
 ** message **   

HTTP Status Code: 400

## See Also


For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon Command Line Interface V2](https://docs.amazonaws.cn/goto/cli2/autoscaling-2011-01-01/ExecutePolicy) 
+  [Amazon SDK for .NET V4](https://docs.amazonaws.cn/goto/DotNetSDKV4/autoscaling-2011-01-01/ExecutePolicy) 
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/autoscaling-2011-01-01/ExecutePolicy) 
+  [Amazon SDK for Go v2](https://docs.amazonaws.cn/goto/SdkForGoV2/autoscaling-2011-01-01/ExecutePolicy) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/autoscaling-2011-01-01/ExecutePolicy) 
+  [Amazon SDK for JavaScript V3](https://docs.amazonaws.cn/goto/SdkForJavaScriptV3/autoscaling-2011-01-01/ExecutePolicy) 
+  [Amazon SDK for Kotlin](https://docs.amazonaws.cn/goto/SdkForKotlin/autoscaling-2011-01-01/ExecutePolicy) 
+  [Amazon SDK for PHP V3](https://docs.amazonaws.cn/goto/SdkForPHPV3/autoscaling-2011-01-01/ExecutePolicy) 
+  [Amazon SDK for Python](https://docs.amazonaws.cn/goto/boto3/autoscaling-2011-01-01/ExecutePolicy) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/autoscaling-2011-01-01/ExecutePolicy)