---
title: "Prerequisites"
version: "main"
source: "Prerequisites/Index.rst"
rendered: "2026-10-08T22:44:49+00:00"
---

# Prerequisites {#prerequisites}

-   One page tree per country ("country branch")
-   Root of each country branch has the option "Use as Root Page" set
-   Crosslinks between the country branches work. Perhaps you have to set `config.typolinkCheckRootline = 1` and `config.typolinkEnableLinksAcrossDomains = 1` in your TypoScript setup.
-   If you have MountPages, try to set `config.MP_disableTypolinkClosestMPvalue = 1` in your TypoScript setup.
-   If you activated the EXT:seo (typo3/cms-seo), you should disable it's hreflang generation
-   -   in TYPO3 9.5LTS with `unset($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['TYPO3CMSFrontendPagePageGenerator']['generateMetaTags']['hreflang']);` in the AdditionalConfiguration.php or your Theme-Extension's ext_localconf.php
-   -   in TYPO3 10.4LTS by not setting `hreflang` in your site config `languages` (or wait for EXT:bgm_hreflang version 5 :-))

Since version 4.0 you have to use the new page translation without the table "pages_language_overlay"!