# AUR4202

## Error Message

`AUR4202: {{triggerName}} is not a supported validation trigger`

## Description

This error occurs when an invalid validation trigger is specified with the `& validate` binding behavior. Only specific trigger names are supported.

## Common Scenarios

```html
<!-- ❌ Wrong: Invalid trigger names -->
<input value.bind="user.name & validate:onclick">
<input value.bind="user.email & validate:focus">
<input value.bind="user.password & validate:keyup">
```

## Solution

```html
<!-- ✅ Correct: Valid trigger names -->
<input value.bind="user.name & validate:blur">
<input value.bind="user.email & validate:change">
<input value.bind="user.password & validate:manual">
<input value.bind="user.age & validate:changeOrBlur">
```