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title: Fail Event Processor
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---
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---

# Fail Event Processor

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

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The Fail Event Processor allows you to fail your test on purpose. This is useful to validate that a
test should fail if that point is reached.

```xml
<munit-tools:fail
  message="This should fail"/>
```

The message field is optional and defines the error message to print when the assertion fails. The
processor throws a `java.lang.AssertionError`.