Error:

```
aws_ecs_service.atlantis: Creating...

Error: InvalidParameterException: The new ARN and resource ID format must be enabled to add tags to the service. Opt in to the new format and try again. "atlantis"
```

Solution - enable new features in AWS account:

```
aws ecs put-account-setting-default --name serviceLongArnFormat --value enabled --region eu-west-1
aws ecs put-account-setting-default --name containerInsights --value enabled --region eu-west-1
aws ecs put-account-setting-default --name taskLongArnFormat --value enabled --region eu-west-1
aws ecs put-account-setting-default --name containerInstanceLongArnFormat --value enabled --region eu-west-1
aws ecs put-account-setting-default --name awsvpcTrunking --value enabled --region eu-west-1
```

Verification (all should be enabled):

```
$ aws ecs list-account-settings --effective-settings
{
    "settings": [
        {
            "name": "awsvpcTrunking",
            "value": "enabled",
            "principalArn": "arn:aws:iam::152235879155:root"
        },
        {
            "name": "containerInsights",
            "value": "enabled",
            "principalArn": "arn:aws:iam::152235879155:root"
        },
        {
            "name": "containerInstanceLongArnFormat",
            "value": "enabled",
            "principalArn": "arn:aws:iam::152235879155:root"
        },
        {
            "name": "serviceLongArnFormat",
            "value": "enabled",
            "principalArn": "arn:aws:iam::152235879155:root"
        },
        {
            "name": "taskLongArnFormat",
            "value": "enabled",
            "principalArn": "arn:aws:iam::152235879155:root"
        }
    ]
}
```

Read more: https://aws.amazon.com/blogs/compute/migrating-your-amazon-ecs-deployment-to-the-new-arn-and-resource-id-format-2/