# UpdateTaskSet
Modifies a task set. This is used when a service uses the `EXTERNAL` deployment controller type. For more information, see [Amazon ECS Deployment Types](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/deployment-types.html) in the *Amazon Elastic Container Service Developer Guide*.
## Request Syntax
```
{
"cluster": "string",
"scale": {
"unit": "string",
"value": number
},
"service": "string",
"taskSet": "string"
}
```
## Request Parameters
For information about the parameters that are common to all actions, see [Common Parameters](CommonParameters.md).
The request accepts the following data in JSON format.
** [cluster](#API_UpdateTaskSet_RequestSyntax) **
The short name or full Amazon Resource Name (ARN) of the cluster that hosts the service that the task set is found in.
Type: String
Required: Yes
** [scale](#API_UpdateTaskSet_RequestSyntax) **
A floating-point percentage of the desired number of tasks to place and keep running in the task set.
Type: [Scale](API_Scale.md) object
Required: Yes
** [service](#API_UpdateTaskSet_RequestSyntax) **
The short name or full Amazon Resource Name (ARN) of the service that the task set is found in.
Type: String
Required: Yes
** [taskSet](#API_UpdateTaskSet_RequestSyntax) **
The short name or full Amazon Resource Name (ARN) of the task set to update.
Type: String
Required: Yes
## Response Syntax
```
{
"taskSet": {
"capacityProviderStrategy": [
{
"base": number,
"capacityProvider": "string",
"weight": number
}
],
"clusterArn": "string",
"computedDesiredCount": number,
"createdAt": number,
"externalId": "string",
"fargateEphemeralStorage": {
"kmsKeyId": "string"
},
"id": "string",
"launchType": "string",
"loadBalancers": [
{
"advancedConfiguration": {
"alternateTargetGroupArn": "string",
"productionListenerRule": "string",
"roleArn": "string",
"testListenerRule": "string"
},
"containerName": "string",
"containerPort": number,
"loadBalancerName": "string",
"targetGroupArn": "string"
}
],
"networkConfiguration": {
"awsvpcConfiguration": {
"assignPublicIp": "string",
"securityGroups": [ "string" ],
"subnets": [ "string" ]
}
},
"pendingCount": number,
"platformFamily": "string",
"platformVersion": "string",
"runningCount": number,
"scale": {
"unit": "string",
"value": number
},
"serviceArn": "string",
"serviceRegistries": [
{
"containerName": "string",
"containerPort": number,
"port": number,
"registryArn": "string"
}
],
"stabilityStatus": "string",
"stabilityStatusAt": number,
"startedBy": "string",
"status": "string",
"tags": [
{
"key": "string",
"value": "string"
}
],
"taskDefinition": "string",
"taskSetArn": "string",
"updatedAt": number
}
}
```
## Response Elements
If the action is successful, the service sends back an HTTP 200 response.
The following data is returned in JSON format by the service.
** [taskSet](#API_UpdateTaskSet_ResponseSyntax) **
Details about the task set.
Type: [TaskSet](API_TaskSet.md) object
## Errors
For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).
** AccessDeniedException **
You don't have authorization to perform the requested action.
** message **
Message that describes the cause of the exception.
HTTP Status Code: 400
** ClientException **
These errors are usually caused by a client action. This client action might be using an action or resource on behalf of a user that doesn't have permissions to use the action or resource. Or, it might be specifying an identifier that isn't valid.
** message **
Message that describes the cause of the exception.
HTTP Status Code: 400
** ClusterNotFoundException **
The specified cluster wasn't found. You can view your available clusters with [ListClusters](https://docs.aws.amazon.com/AmazonECS/latest/APIReference/API_ListClusters.html). Amazon ECS clusters are Region specific.
** message **
Message that describes the cause of the exception.
HTTP Status Code: 400
** InvalidParameterException **
The specified parameter isn't valid. Review the available parameters for the API request.
For more information about service event errors, see [Amazon ECS service event messages](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/service-event-messages-list.html).
** message **
Message that describes the cause of the exception.
HTTP Status Code: 400
** ServerException **
These errors are usually caused by a server issue.
** message **
Message that describes the cause of the exception.
HTTP Status Code: 500
** ServiceNotActiveException **
The specified service isn't active. You can't update a service that's inactive. If you have previously deleted a service, you can re-create it with [CreateService](https://docs.aws.amazon.com/AmazonECS/latest/APIReference/API_CreateService.html).
** message **
Message that describes the cause of the exception.
HTTP Status Code: 400
** ServiceNotFoundException **
The specified service wasn't found. You can view your available services with [ListServices](https://docs.aws.amazon.com/AmazonECS/latest/APIReference/API_ListServices.html). Amazon ECS services are cluster specific and Region specific.
** message **
Message that describes the cause of the exception.
HTTP Status Code: 400
** TaskSetNotFoundException **
The specified task set wasn't found. You can view your available task sets with [DescribeTaskSets](https://docs.aws.amazon.com/AmazonECS/latest/APIReference/API_DescribeTaskSets.html). Task sets are specific to each cluster, service and Region.
** message **
Message that describes the cause of the exception.
HTTP Status Code: 400
** UnsupportedFeatureException **
The specified task isn't supported in this Region.
** message **
Message that describes the cause of the exception.
HTTP Status Code: 400
## See Also
For more information about using this API in one of the language-specific AWS SDKs, see the following:
+ [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/ecs-2014-11-13/UpdateTaskSet)
+ [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/ecs-2014-11-13/UpdateTaskSet)
+ [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/ecs-2014-11-13/UpdateTaskSet)
+ [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/ecs-2014-11-13/UpdateTaskSet)
+ [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ecs-2014-11-13/UpdateTaskSet)
+ [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/ecs-2014-11-13/UpdateTaskSet)
+ [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/ecs-2014-11-13/UpdateTaskSet)
+ [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/ecs-2014-11-13/UpdateTaskSet)
+ [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/ecs-2014-11-13/UpdateTaskSet)
+ [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ecs-2014-11-13/UpdateTaskSet)