> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cowboy.inc/llms.txt
> Use this file to discover all available pages before exploring further.

# E1611 — Unsupported verification mode

> Unsupported verification mode

# E1611 — Unsupported verification mode

| Property     | Value                         |
| ------------ | ----------------------------- |
| **Code**     | `1611`                        |
| **Slug**     | `E1611`                       |
| **Category** | `runner` (Runner / Consensus) |
| **CIP**      | CIP-2                         |

## What happened

Unsupported verification mode.

## Why it happened

The requested verification mode is not supported by this node version.

## How to fix

Use a verification mode supported by the current node version.

## Receipt example

```json theme={null}
{
  "code": 1611,
  "slug": "E1611",
  "category": "runner",
  "what": "Unsupported verification mode",
  "fix": "Use a verification mode supported by the current node version.",
  "docs_url": "https://docs.cowboy.inc/errors/E1611"
}
```

***

<Card title="All Error Codes" icon="list" href="/errors/overview">
  View the complete error code reference
</Card>