---
title: "GET /#Action=AttachTrafficSources"
method: GET
path: "/#Action=AttachTrafficSources"
---

# GET /#Action=AttachTrafficSources

`GET /#Action=AttachTrafficSources`

Attaches one or more traffic sources to the specified Auto Scaling group.

You can use any of the following as traffic sources for an Auto Scaling group:

*   Application Load Balancer
    
*   Classic Load Balancer
    
*   Gateway Load Balancer
    
*   Network Load Balancer
    
*   VPC Lattice
    

This operation is additive and does not detach existing traffic sources from the Auto Scaling group.

After the operation completes, use the DescribeTrafficSources API to return details about the state of the attachments between traffic sources and your Auto Scaling group. To detach a traffic source from the Auto Scaling group, call the DetachTrafficSources API.

## Query parameters

- `AutoScalingGroupName` string, required
- `TrafficSources` TrafficSourceIdentifier[], required
  - `Identifier` string, required — <p>Identifies the traffic source.</p> <p>For Application Load Balancers, Gateway Load Balancers, Network Load Balancers, and VPC Lattice, this will be the Amazon Resource Name (ARN) for a target group in this account and Region. For Classic Load Balancers, this will be the name of the Classic Load Balancer in this account and Region.</p> <p>For example: </p> <ul> <li> <p>Application Load Balancer ARN: <code>arn:aws:elasticloadbalancing:us-west-2:123456789012:targetgroup/my-targets/1234567890123456</code> </p> </li> <li> <p>Classic Load Balancer name: <code>my-classic-load-balancer</code> </p> </li> <li> <p>VPC Lattice ARN: <code>arn:aws:vpc-lattice:us-west-2:123456789012:targetgroup/tg-1234567890123456</code> </p> </li> </ul> <p>To get the ARN of a target group for a Application Load Balancer, Gateway Load Balancer, or Network Load Balancer, or the name of a Classic Load Balancer, use the Elastic Load Balancing <a href="https://docs.aws.amazon.com/elasticloadbalancing/latest/APIReference/API_DescribeTargetGroups.html">DescribeTargetGroups</a> and <a href="https://docs.aws.amazon.com/elasticloadbalancing/latest/APIReference/API_DescribeLoadBalancers.html">DescribeLoadBalancers</a> API operations.</p> <p>To get the ARN of a target group for VPC Lattice, use the VPC Lattice <a href="https://docs.aws.amazon.com/vpc-lattice/latest/APIReference/API_GetTargetGroup.html">GetTargetGroup</a> API operation.</p>
  - `Type` string — <p>Provides additional context for the value of <code>Identifier</code>.</p> <p>The following lists the valid values:</p> <ul> <li> <p> <code>elb</code> if <code>Identifier</code> is the name of a Classic Load Balancer.</p> </li> <li> <p> <code>elbv2</code> if <code>Identifier</code> is the ARN of an Application Load Balancer, Gateway Load Balancer, or Network Load Balancer target group.</p> </li> <li> <p> <code>vpc-lattice</code> if <code>Identifier</code> is the ARN of a VPC Lattice target group.</p> </li> </ul> <p>Required if the identifier is the name of a Classic Load Balancer.</p>
- `Action` 'AttachTrafficSources', required
- `Version` '2011-01-01', required

## Response `200`

Success

## Other responses

- `480` — ResourceContentionFault
- `481` — ServiceLinkedRoleFailure

---

[API](https://skmtc.net/aws/apis/autoscaling.md) · [All operations](https://skmtc.net/aws/apis/autoscaling/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/aws/autoscaling/versions/5e07057bfecf/schema)