# unique\_tag

Hot Reloadable

Defines a tag prefix as a constraint for placement of assets across a JetStream domain. For example, if the value is `az:` then replicas of an assets will be required to be placed on servers having different `az:` tags.

## Types

| Type     | Description | Choices |
| -------- | ----------- | ------- |
| `string` | -           | -       |