---
title: "On Error 1 Icon | Free Download PNG & SVG | Ultimate Bold"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/on-error-1--8228
canonical_url: "https://www.streamlinehq.com/icons/download/on-error-1--8228"
summary: "Sharp solid icon of a white exclamation mark inside a rounded black square. Used for alerts, warnings, and error states."
---

# On Error 1 icon

The On Error 1 icon shows a white exclamation mark centered inside a rounded black square. Drawn in the solid style on a 24px grid so its bold shape stays clear at small sizes. Use it for error messages, warning banners, validation states, and system alerts. It belongs to Ultimate Bold set in the Ultimate family.

## Preview

![Sharp solid icon of a white exclamation mark inside a rounded black square. Used for alerts, warnings, and error states.](https://assets.streamlinehq.com/image/private/w_240,h_240,ar_1/f_auto/v1/icons/diagrams/on-error-1-afyztbz8vaf4wxdxtjfaof.png/on-error-1-9j1q9z19zxwehz8e93dd7s.png?_a=DATAiZkSZAA0)

## Details

- **Name**: On Error 1
- **Type**: Icon
- **Set**: [Ultimate Bold](/icons/streamline-bold.md) — Bold style features strong, solid shapes for instant recognition. It gives excellent legibility on dark backgrounds.
- **Family**: [Ultimate](/icons/ultimate-sets.md) — The encyclopedia of icons
- **Style**: Solid, Filled, Bold, Glyph
- **Category**: Arrows Diagrams › Diagrams
- **Default size**: 24px
- **Pricing**: Pro
- **License**: [Commercial](https://home.streamlinehq.com/license-premium)
- **Author**: [Streamline](https://home.streamlinehq.com/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: error, warning, caution, alert, important, danger, notice, exclamation, attention, message, notification, diagram, hazard, on

## Download

- [Download On Error 1 on Streamline](https://www.streamlinehq.com/icons/download/on-error-1--8228)

## Also available in other styles

- [On Error 1 — Ultimate Regular](/icons/download/on-error-1--9665.md) (Pro)
- [On Error 1 — Ultimate Light](/icons/download/on-error-1--8959.md) (Pro)

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