# Replica State

## Properties

| Property | Type | Required | Description |
| --- | --- | --- | --- |
| `last-applied-watermark` | integer | **yes** | The latest logical sequence number or state watermark successfully synced to this regional replica. |
| `zone` | string | **yes** | The destination target zone tracking this specific replica instance. |
| `last-failure` | [Replica Failure](/reference/api/_schemas/replica-failure/) | no |  |