# revision_required

> This setting is versioned. Read it first, then send `expected_revision` (or `If-Match`).

Source: https://x.builera.app/docs/en/errors/revision_required

| | |
|---|---|
| HTTP status | 428 |
| Safe to retry | No |
| Message (fixed, English) | This setting is versioned: send expected_revision (If-Match). |

## What to do {#what-to-do}

This setting is versioned. Read it first, then send `expected_revision` (or `If-Match`).

## Error shape {#body}

```json
{
  "code": "revision_required",
  "message": "This setting is versioned: send expected_revision (If-Match).",
  "retryable": false,
  "request_id": "req_…"
}
```

Can be returned by 17 operations

[All error codes](/docs/en/errors)