# AUR0102

## Error Message

`AUR0102: Ast eval error: binding behavior "{{name}}" already applied.`

## Description

This error occurs when the same binding behavior is applied more than once in a single binding expression.

## Example Trigger

```html
<!-- ❌ Same behavior applied twice -->
<input value.bind="value & debounce:200 & debounce:200">
```

## Solution

* Remove the duplicate behavior, or ensure you only apply it once.

## More Information

This code is also documented under the runtime-html section: [AUR0102](https://docs.aurelia.io/developer-guides/error-messages/runtime-html/aur0102).