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# ValidationMode

Whether a validated block is valid, invalid, or the kernel hit an
internal error during validation.

```
enum ValidationMode
```

## Overview

The high-level verdict carried by [`validationMode`](/documentation/BitcoinKernel/BlockValidationState/validationMode).
Use [`blockValidationResult`](/documentation/BitcoinKernel/BlockValidationState/blockValidationResult) to get the granular
reason when this is [`ValidationMode.invalid`](/documentation/BitcoinKernel/ValidationMode/invalid).

Maps to `btck_ValidationMode` constants in the kernel C API.