# Accelerate Configuration profile: pseudoparameter substitution
<a name="acc-mem-config-doc-sub"></a>

In either of the configuration profiles, you can specify pseudoparameters that are substituted in place as follows:
+ Global - anywhere in the profile:
  + ${AWS::AccountId}: Replaced with your AWS account ID
  + ${AWS::Partition}: Replaced with the partition of the AWS Region the resource is in (this is 'aws' for most AWS Regions); for more information, see the entry for partition in the [ARN reference](https://docs.amazonaws.cn/en_us/general/latest/gr/aws-arns-and-namespaces.html).
  + ${AWS::Region}: Replaced with the Region name of the Region that your resource is deployed to (for example us-east-1)
+ In an **AWS::EC2::Instance** resource type block:
  + ${EC2::InstanceId}: (**identifier**) replaced by the instance ID of your Amazon EC2 instance.
  + ${EC2::InstanceName}: replaced by the name of your Amazon EC2 instance. If the instance name is not defined, replaced by the instance ID of your Amazon EC2 instance.
+ In an **AWS::EC2::Instance::Disk** resource type block:
  + ${EC2::InstanceId}: (**identifier**) Replaced by the instance ID of your Amazon EC2 instance.
  + ${EC2::InstanceName}: Replaced by the name of your Amazon EC2 instance. If the instance name is not defined, replaced by the instance ID of your Amazon EC2 instance.
  + ${EC2::Disk::Device}: Replaced by the name of the disk. (Linux only, on instances managed by the [CloudWatch Agent](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/Install-CloudWatch-Agent.html)).
  + ${EC2::Disk::FSType}: Replaced by the file system type of the disk. (Linux only, on instances managed by the [ CloudWatchAgent](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/Install-CloudWatch-Agent.html)).
  + ${EC2::Disk::Path}: Replaced by the disk path. (Windows only, this is the drive label (for example, c:/), only on an instance managed by the [CloudWatch Agent](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/Install-CloudWatch-Agent.html)).
  + ${EC2::Disk::UUID}: (**identifier**) Replaced by a generated UUID that uniquely identifies the disk, this must be specified in the name of the alarm, as an alarm under AWS::EC2::Instance::Disk resource type will create one alarm per volume. Specifying ${EC2::Disk::UUID} maintains uniqueness of alarm names.
+ In an **AWS::OpenSearch::Domain** resource type block:
  + ${OpenSearch::DomainName}: (**identifier**) replaced by the name of your OpenSearch domain.
+ In an **AWS::Elasticsearch::Domain** resource type block:
  + ${Elasticsearch::DomainName}: (**identifier**) replaced by the name of your Elasticsearch domain.
+ In an **AWS::ElasticLoadBalancing::LoadBalancer** resource type block:
  + ${ElasticLoadBalancing::LoadBalancer::Name}: (**identifier**) replaced by the name of your V1 Load Balancer.
+ In an **AWS::ElasticLoadBalancingV2::LoadBalancer** resource type block:
  + ${ElasticLoadBalancingV2::LoadBalancer::Arn}: replaced by the ARN of your V2 Load Balancer.
  + ${ElasticLoadBalancingV2::LoadBalancer}: replaced by the ARN of your V2 Load Balancer.
  + ${ElasticLoadBalancingV2::LoadBalancer::Name}: (**identifier**) replaced by the name of your V2 Load Balancer.
  + ${ElasticLoadBalancingV2::LoadBalancer::FullName}: replaced by the full name of your V2 Load Balancer.
+ In an **AWS::ElasticLoadBalancingV2::LoadBalancer::TargetGroup** resource type block:
  + ${ElasticLoadBalancingV2::TargetGroup::FullName}: (**identifier**) replaced by the target group name of your V2 Load Balancer.
  + ${ElasticLoadBalancingV2::TargetGroup::UUID}: (**identifier**) replaced by a generated UUID for your V2 Load Balancer.
  + ${ElasticLoadBalancingV2::LoadBalancer::FullName}: Replaced by the full name of your V2 Load Balancer.
+ In an **AWS::EC2::NatGateway** resource type block:
  + ${NatGateway::NatGatewayId}: (**identifier**) replaced by the NAT Gateway ID.
+ In an **AWS::RDS::DBInstance** resource type block:
  + ${RDS::DBInstanceIdentifier}: (**identifier**) replaced by your RDS DB instance identifier.
+ In an **AWS::Redshift::Cluster** resource type block:
  + ${Redshift::ClusterIdentifier}: (**identifier**) replaced by your Redshift cluster identifier.
+ In an **AWS::EC2::VPNConnection** resource type block:
  + ${AWS::EC2::VpnConnectionId}: (**identifier**) replaced by your VPN ID.
+ In an **AWS::EFS::FileSystem** resource type block:
  + ${EFS::FileSystemId}: (**identifier**) Replaced by the file system ID of your EFS file system.
+ In an **AWS::FSx::FileSystem::ONTAP** resource type block:
  + ${FSx::FileSystemId}: (**identifier**) Replaced by the file system ID of your FSX filesystem.
  + ${FSx::FileSystem::Throughput}: Replaced by the throughput of your FSX file system.
  + ${FSx::FileSystem::Iops}: Replaced by the IOPS of the FSX file system.
+ In an **AWS::FSx::FileSystem::ONTAP::Volume** resource type block:
  + ${FSx::FileSystemId}: (**identifier**) Replaced by the file system ID of your FSX file system.
  + ${FSx::ONTAP::VolumeId}: (**identifier**) Replaced by the volume ID.
+ In an **AWS::FSx::FileSystem::Windows** resource type block:
  + ${FSx::FileSystemId}: (**identifier**) Replaced by the file system ID of your FSX file system.
  + ${FSx::FileSystem::Throughput}: Replaced by the throughput of your FSX file system.

**Note**  
All parameters marked with **identifier** are used as a prefix for the name of created alarms, unless you specify that identifier in the alarm name.