.. include:: /Includes.rst.txt
.. _deprecation-63603:
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Deprecation: #63603 - FileController and FileListController overwriteExistingFiles changed to string value
==========================================================================================================
See :issue:`63603`
Description
===========
The GET/POST param to tell the FileController and FileListController whether to override a file or not switched from a bool
value to a string with the possibilities of the `\TYPO3\CMS\Core\Resource\DuplicationBehavior` enumeration.
Impact
======
Extensions still using `overwriteExistingFiles = 1` will throw a deprecation warning.
Affected Installations
======================
All installations with extensions that use the BE upload functionality and supply the file override option.
Migration
=========
Change the `` to ``.
.. index:: PHP-API, FAL, Backend