---
title: "is alphanumeric · RUAL Documentation"
description: "Validates that a value contains only alphanumeric characters, spaces, and asterisks"
canonical: https://docs.rual.nl/block-types/condition/condition_no_special_characters
language: en
---

# is alphanumeric

This block is part of the [`condition`](https://docs.rual.nl/block-types/condition) group and was last modified in core [`v14.0.3`](https://docs.rual.nl/core-versions/140003).

Validates that a value contains only alphanumeric characters, spaces, and asterisks

- value required `value`

- disallow space `disallow_space` `condition`

- Valid `condition`

| `special characters` |
| --- |

### Core Releases