---
title: "Deprecation: #111134 - #[Transient] for skipping validation"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:deprecation-111134-1792300002"
source: "Changelog/15.0/Deprecation-111134-TransientForSkippingValidation.rst"
typo3-version: "15.0"
typo3-major: 15
type: "deprecation"
issue: 111134
forge: "https://forge.typo3.org/issues/111134"
tags: ["PHP-API", "NotScanned", "ext:extbase"]
rendered: "2026-10-27T20:58:30+00:00"
---

# Deprecation: #111134 - #\[Transient\] for skipping validation {#deprecation-111134-1792300002}

See [forge#111134](https://forge.typo3.org/issues/111134)

## Description {#description}

Since [forge#91727](https://forge.typo3.org/issues/91727), the Extbase attribute
`\TYPO3\CMS\Extbase\Attribute\ORM\Transient` also skips the validator that
Extbase generates automatically for properties typed as another model or as a
collection. This coupled validation to a persistence attribute.

Relying on `#[Transient]` to skip validation of such a property has been
marked as deprecated and will be removed in TYPO3 v16.0. The new attribute
`\TYPO3\CMS\Extbase\Attribute\IgnoreValidation` can be used on properties
instead, see [Feature: #111134 - Allow #\[IgnoreValidation\] on Extbase properties](https://docs.typo3.org/permalink/changelog:feature-111134-1792300001).

## Impact {#impact}

Extbase triggers a PHP deprecation warning when it builds the validators of a
model that has a property with `#[Transient]` and no
`#[IgnoreValidation]`, and Extbase would otherwise generate a validator
for that property. This applies to properties typed as another model and to
typed collections such as `ObjectStorage<Category>`. The validator is
still skipped until TYPO3 v16.0. Starting with TYPO3 v16.0, `#[Transient]`
does not influence validation anymore and the automatically generated validator
is applied.

Properties for which Extbase never generates a validator, for example
properties of simple types or of singleton classes, are not affected and
trigger no deprecation.

Properties typed as other classes, for example `\DateTimeImmutable`,
trigger the deprecation as well, although the validator generated for them is
empty. Adding `#[IgnoreValidation]` to such a property silences the
deprecation and changes nothing else.

## Affected installations {#affected-installations}

TYPO3 installations with extensions that have domain model properties with
`#[Transient]` that are typed as another model or as a typed collection,
for example `ObjectStorage<Category>`, are affected. The extension scanner
cannot detect this, since the deprecated behavior is the side effect of an
attribute.

## Migration {#migration}

Replace `#[Transient]` with `#[IgnoreValidation]` on every property
that should not be validated. `#[Transient]` is not needed to keep a
property out of persistence: Extbase only maps properties that have a matching
column in the TCA. This can be automated with a Rector rule that replaces
`#[Transient]` with `#[IgnoreValidation]` on every property with a
non-simple type.

**Before (deprecated)**

```php
use TYPO3\CMS\Extbase\Attribute\ORM\Transient;

#[Transient]
protected ?Category $category = null;
```

**After**

```php
use TYPO3\CMS\Extbase\Attribute\IgnoreValidation;

#[IgnoreValidation]
protected ?Category $category = null;
```

Extensions that also support TYPO3 v13.4 or v14 keep `#[Transient]` next
to `#[IgnoreValidation]` until they drop support for these versions.
Extbase in TYPO3 v13.4 and v14 does not evaluate unknown property attributes,
so the same code works in TYPO3 v13.4, v14 and v15.