Modifies which task set in a service is the primary task set. Any parameters that are updated on the primary task set in a service will transition to the service. This is used when a service uses the <code>EXTERNAL</code> deployment controller type. For more information, see <a href="https://docs.aws.amazon.com/AmazonECS/latest/developerguide/deployment-types.html">Amazon ECS Deployment Types</a> in the <i>Amazon Elastic Container Service Developer Guide</i>.

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}

Modifies which task set in a service is the primary task set. Any parameters that are updated on the primary task set in a service will transition to the service. This is used when a service uses the <code>EXTERNAL</code> deployment controller type. For more information, see <a href="https://docs.aws.amazon.com/AmazonECS/latest/developerguide/deployment-types.html">Amazon ECS Deployment Types</a> in the <i>Amazon Elastic Container Service Developer Guide</i>.

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}