---
title: "ValidationSubject – API-Referenz · Quittio"
description: "What is validated: the calculated data and, where available, the generated XML and PDF."
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  "og:image:alt": "Quittio: E-Rechnungen für PHP und Laravel. Rechtssicher, validiert, archiviert, mit geprüfter Beispielrechnung."
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---

> Index of every page on this site: [llms.txt](https://quittio.dev/llms.txt)

[API reference](https://quittio.dev/docs/api) / [Quittio](https://quittio.dev/docs/api/Quittio) \\ [Core](https://quittio.dev/docs/api/Quittio/Core) \\ [Validation](https://quittio.dev/docs/api/Quittio/Core/Validation)

# ValidationSubject

final readonly class in quittio/core

`Quittio\Core\Validation\ValidationSubject` · [Source](https://github.com/Quittio/quittio/blob/v0.7.1/packages/core/src/Validation/ValidationSubject.php#L13)

What is validated: the calculated data and, where available, the generated XML and PDF.

## Properties \#

| Property | Type | Description |
| --- | --- | --- |
| `$context` readonly | `[ValidationContext](https://quittio.dev/docs/api/Quittio/Core/Validation/ValidationContext)` | |
| `$invoice` readonly | `[InvoiceData](https://quittio.dev/docs/api/Quittio/Core/Data/InvoiceData)` | |
| `$pdf` readonly | `?string` | |
| `$syntax` readonly | `? [Syntax](https://quittio.dev/docs/api/Quittio/Core/Profiles/Syntax)` | |
| `$xml` readonly | `?string` | |

## Methods \#

| Method | Description |
| --- | --- |
| `->__construct()` | |
| `->withPdf()` | |
| `->withXml()` | |

### `__construct()`#

```
public function __construct(
    InvoiceData $invoice,
    ValidationContext $context,
    ?string $xml = null,
    ?Syntax $syntax = null,
    ?string $pdf = null,
)
```

| Parameter | Type | Description |
| --- | --- | --- |
| `$invoice` | `[InvoiceData](https://quittio.dev/docs/api/Quittio/Core/Data/InvoiceData)` | |
| `$context` | `[ValidationContext](https://quittio.dev/docs/api/Quittio/Core/Validation/ValidationContext)` | |
| `$xml` | `?string` = `null` | |
| `$syntax` | `? [Syntax](https://quittio.dev/docs/api/Quittio/Core/Profiles/Syntax)` = `null` | |
| `$pdf` | `?string` = `null` | |

### `withPdf()`#

```
public function withPdf(string $pdf): self
```

| Parameter | Type | Description |
| --- | --- | --- |
| `$pdf` | `string` | |

<dl><dt>Returns</dt>
<dd><code>self</code></dd>
</dl>

### `withXml()`#

```
public function withXml(string $xml, Syntax $syntax): self
```

| Parameter | Type | Description |
| --- | --- | --- |
| `$xml` | `string` | |
| `$syntax` | `[Syntax](https://quittio.dev/docs/api/Quittio/Core/Profiles/Syntax)` | |

<dl><dt>Returns</dt>
<dd><code>self</code></dd>
</dl>

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```