---
title: "Deprecation: #79770 - Deprecate inline localizationMode"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:deprecation-79770"
source: "Changelog/8.7/Deprecation-79770-DeprecateInlineLocalizationMode.rst"
modified: "2026-09-15T10:46:36+00:00"
---

# Deprecation: #79770 - Deprecate inline localizationMode

See [forge#79770](https://forge.typo3.org/issues/79770)

## Description

The `localizationMode` for inline relational record editing types is deprecated.

## Impact

Using `localizationMode` set to `keep` and having `allowLanguageSynchronization` enabled at the same time is
counter-productive, since it will deny the synchronization process for the affected field. That's why `localizationMode`
is unset only if `allowLanguageSynchronization` is enabled.

## Affected Installations

All having `$TCA[<table-name>]['columns'][<field-name>]['config']['behaviour']['localizationMode']` defined for
database tables that support translations.

## Migration

Remove `$TCA[<table-name>]['columns'][<field-name>]['config']['behaviour']['localizationMode']` definitions and
make use of either one of the following

-   `$TCA[<table-name>]['columns'][<field-name>]['config']['behaviour']['allowLanguageSynchronization'] = true` if editors can decide whether to provide custom child references or synchronize all references from the language parent record - this comes close to `localizationMode=select` without having the possibility to selectively translate child references
-   `$TCA[<table-name>]['columns'][<field-name>]['l10n_mode'] = 'exclude'` if editors don't have a choice to translate child references - this corresponds to `localizationMode=keep`