---
title: "Breaking: #97664 - FormPersistenceManagerInterface modified"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:breaking-97664-1688659987"
source: "Changelog/13.0/Breaking-97664-FormPersistenceManagerInterfaceModifed.rst"
modified: "2026-09-14T09:47:36+00:00"
---

# Breaking: #97664 - FormPersistenceManagerInterface modified

See [forge#97664](https://forge.typo3.org/issues/97664)

## Description

The PHP interface `\TYPO3\CMS\Form\Mvc\Persistence\FormPersistenceManagerInterface`
now requires PHP classes to implement an additional method `hasForms()` in
order to fulfill the API.

## Impact

TYPO3 projects with extensions using implementations of the
`\TYPO3\CMS\Form\Mvc\Persistence\FormPersistenceManagerInterface` will now
break with a fatal PHP error.

## Affected installations

Extensions using implementations of the
`\TYPO3\CMS\Form\Mvc\Persistence\FormPersistenceManagerInterface`.

## Migration

Add the new method to your extension's implementation of this interface,
which also makes it compatible with TYPO3 v12 and TYPO3 v13 at the same time.