---
title: "Feature: #101151 - Native enum DuplicationBehavior"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:feature-101151-1688113519"
source: "Changelog/13.0/Feature-101151-DuplicationBehavior.rst"
typo3-version: "13.0"
typo3-major: 13
type: "feature"
issue: 101151
forge: "https://forge.typo3.org/issues/101151"
tags: ["Backend", "NotScanned", "ext:backend", "ext:core", "ext:filelist", "ext:impexp"]
rendered: "2026-10-07T19:18:07+00:00"
---

# Feature: #101151 - Native enum DuplicationBehavior {#feature-101151-1688113519}

See [forge#101151](https://forge.typo3.org/issues/101151)

## Description {#description}

A new native backed enum `\TYPO3\CMS\Core\Resource\Enum\DuplicationBehavior`
has been introduced for streamlined usage within:

-   `\TYPO3\CMS\Backend\Controller\File\FileController`
-   `\TYPO3\CMS\Core\Resource\AbstractFile`
-   `\TYPO3\CMS\Core\Resource\FileInterface`
-   `\TYPO3\CMS\Core\Resource\FileReference`
-   `\TYPO3\CMS\Core\Resource\Folder`
-   `\TYPO3\CMS\Core\Resource\OnlineMedia\Helpers\AbstractOnlineMediaHelper`
-   `\TYPO3\CMS\Core\Utility\File\ExtendedFileUtility`
-   `\TYPO3\CMS\Filelist\Controller\FileListController`
-   `\TYPO3\CMS\Impexp\Controller\ImportController`

## Impact {#impact}

The new `\TYPO3\CMS\Core\Resource\Enum\DuplicationBehavior` native backed
enum is meant to be a drop-in replacement for the former
`\TYPO3\CMS\Core\Resource\DuplicationBehavior` class.