Every Orbs VM service has a unique ID that identifies it. You are free to choose any meaningful unique ID that is currently free. Your unique ID will be registered when your service is deployed for the first time.
Lowercase alpha-numeric characters and dashes. The ID must start with vm- prefix.
The running example in these docs will be: vm-unique-example
Check for collisions
Your can make sure your unique ID is free by looking at the official Orbs VM repo on GitHub.