# Replica Failure

## Properties

| Property | Type | Required | Description |
| --- | --- | --- | --- |
| `attempted-watermark` | integer | **yes** | The target sync sequence watermark that triggered the replication failure. |
| `error` | string | **yes** | A descriptive message containing error logs or system details regarding the sync failure. |
| `failed-at` | string | **yes** | The UTC timestamp showing exactly when the replication sync window failed.<br/><br/>ISO 8601 date-time. |