Haenicke Institute for Global Education | Western Michigan University

Help Desk | Information Technology | Western Michigan University

WMU News | Western Michigan University

Campus Maps | Western Michigan University

About WMU | Western Michigan University

Apply | Western Michigan University

Academics | Western Michigan University

Military and Veterans Affairs | Western Michigan University

Contact Us | Western Michigan University

Research and Innovation | Western Michigan University

All `id` attributes on a page must be unique, or accessible technologies used by the page 
can stop working.

## Example

The duplicate `id` here makes it unclear which label belongs to which input field:

```html
<label for="name">Your name</label>
<input id="name">

<label for="name">Company name</label>
<input id="name">
```

As a result, accessible technologies like screen readers can fail to read out the 
correct text, or may read out no text at all.

Similar issues can occur when using `aria-labelledby` and `aria-describedby`.

## How to fix

Ensure all `id` attributes on a page are unique. 

## More information

See [Technique H93](https://www.w3.org/TR/2016/NOTE-WCAG20-TECHS-20161007/H93) 
for more information.

duplicate-id

December 2025

November 2025

Western Michigan University

Title / URL	Issues
Haenicke Institute for Global Education \| Western Michigan Universitywmich.edu/global	20
Help Desk \| Information Technology \| Western Michigan Universitywmich.edu/it/helpdesk	18
WMU News \| Western Michigan Universitywmich.edu/news	18
Campus Maps \| Western Michigan Universitywmich.edu/maps	18
About WMU \| Western Michigan Universitywmich.edu/about	18
Apply \| Western Michigan Universitywmich.edu/apply	18
Academics \| Western Michigan Universitywmich.edu/academics	18
Military and Veterans Affairs \| Western Michigan Universitywmich.edu/military	18
Contact Us \| Western Michigan Universitywmich.edu/contact	18
Research and Innovation \| Western Michigan Universitywmich.edu/research	18

Fix duplicate IDs

Western Michigan University

Where this issue has occurred