# Activity


Describes scaling activity, which is a long-running process that represents a change to your Auto Scaling group, such as changing its size or replacing an instance.

## Contents


 ** ActivityId **   
The ID of the activity.  
Type: String  
Pattern: `[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*`   
Required: Yes

 ** 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: Yes

 ** Cause **   
The reason the activity began.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 1023.  
Pattern: `[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*`   
Required: Yes

 ** StartTime **   
The start time of the activity.  
Type: Timestamp  
Required: Yes

 ** StatusCode **   
The current status of the activity.  
Type: String  
Valid Values: `PendingSpotBidPlacement | WaitingForSpotInstanceRequestId | WaitingForSpotInstanceId | WaitingForInstanceId | PreInService | InProgress | WaitingForELBConnectionDraining | MidLifecycleAction | WaitingForInstanceWarmup | Successful | Failed | Cancelled | WaitingForConnectionDraining | WaitingForInPlaceUpdateToStart | WaitingForInPlaceUpdateToFinalize | InPlaceUpdateInProgress`   
Required: Yes

 ** AutoScalingGroupARN **   
The Amazon Resource Name (ARN) of the Auto Scaling group.  
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: No

 ** AutoScalingGroupState **   
The state of the Auto Scaling group, which is either `InService` or `Deleted`.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 32.  
Required: No

 ** Description **   
A friendly, more verbose description of the activity.  
Type: String  
Pattern: `[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*`   
Required: No

 ** Details **   
The details about the activity.  
Type: String  
Pattern: `[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*`   
Required: No

 ** EndTime **   
The end time of the activity.  
Type: Timestamp  
Required: No

 ** Progress **   
A value between 0 and 100 that indicates the progress of the activity.  
Type: Integer  
Required: No

 ** StatusMessage **   
A friendly, more verbose description of the activity status.  
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

## See Also


For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/autoscaling-2011-01-01/Activity) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/autoscaling-2011-01-01/Activity) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/autoscaling-2011-01-01/Activity)