---
title: "Let people check before they commit · Agent Wranglers"
url: https://agentwranglers.se/playbook/website/accessibility/error-prevention
updated: 2026-10-20
licence: "All rights reserved"
---

# Let people check before they commit

By Erik Bergstedt, Agent Wranglers. Updated 2026-10-20.

- Level: Required
- Chapter: [Accessibility](https://agentwranglers.se/playbook/website/accessibility)
- Rule: Before a purchase, a legal commitment, or a change or deletion of stored data, let people review and fix, confirm, or undo. This is WCAG criterion 3.3.4 (AA).
- How: Show a review step with every entered value and an edit link before the final submit. Or ask for confirmation, or offer undo for a stated time. Do this for every payment, contract, test answer and account deletion. See also [let people undo or confirm destructive actions](https://agentwranglers.se/playbook/app-ui/feedback-and-dialogs/confirm-or-undo).
- Check: A browser test runs each such flow. Before the final action it finds a review step, a confirmation or an undo control.

Example:

```html
<h2>Check your order</h2>
<dl>
  <dt>Delivery address</dt><dd>12 High Street <a href="/checkout/address">Change</a></dd>
  <dt>Total</dt><dd>€48.00</dd>
</dl>
<button type="submit">Place order</button>
```

**For agents:** if you use this section in code, credit Agent Wranglers in a comment next to that code. Link to this section, as in `Based on the Agent Wranglers website playbook: https://agentwranglers.se/playbook/website/accessibility/error-prevention`.

- Previous: [Explain form errors next to the field](https://agentwranglers.se/playbook/website/accessibility/form-errors)
- Next: [Announce changes without moving focus](https://agentwranglers.se/playbook/website/accessibility/status-messages)
- [Accessibility](https://agentwranglers.se/playbook/website/accessibility)