Question: After upgrading from 7LTS to 8LTS and running TCA Migrations Check for my extensions the result list shows the following:

Comment:

> 
> The 4th parameter 'specConf' of the field 'showitem' with fieldName = 'sys\_language\_uid' has been migrated, from TCA table "tx\_myextension\_domain\_model\_accounts['types']['1']['showitem']"to "tx\_myextension\_domain\_model\_accounts['types']['1']['columnsOverrides']['sys\_language\_uid']['defaultExtras']".
> 
> 
> 

In TCA I think this is the spot:

```php
    'types' => array(
        '1' => array('showitem' => 'sys_language_uid;;;;1-1-1, l10n_parent, l10n_diffsource, hidden;;1, --div--;LLL:EXT:cms/locallang_ttc.xlf:tabs.access, starttime, endtime'),
    ),

```

What changes do I need to do to get rid of comment? 

I think this is the relevant part: 
<https://docs.typo3.org/c/typo3/cms-core/master/en-us/Changelog/7.3/Deprecation-67229-TcaChanges.html>

And this comment as well?: 

> 
> Migrated 'showitem' field from TCA table tx\_accountmanager\_domain\_model\_accounts['types']['1']" : Moved additional palette with name "tx\_myextension\_domain\_model\_accounts['types']['1']['1']" as 3rd argument of field "tx\_myextension\_domain\_model\_accounts['types']['1']['hidden']"to an own palette. The result of this part is: "hidden, --palette--;;1"
> 
> 
>

Answer: 
You may drop the whole `;;;;1-1-1` thing from your `sys_language_uid` field.

The best way to compare your original TCA with the migrated TCA is using the backend module "Configuration" and clicking through the TCA tree.
Here a way to fix it, using the migrated version of the Backend Module `Configuration`:

If install tool > `TCA Migrations` says the following:

> 
> The 4th parameter 'specConf' of the field 'showitem' with fieldName = 'sys\_language\_uid' has been migrated, from TCA table "tx\_arbeiten\_domain\_model\_diplomarbeiten['types']['1']['showitem']"to "tx\_arbeiten\_domain\_model\_diplomarbeiten['types']['1']['columnsOverrides']['sys\_language\_uid']['defaultExtras']".
> 
> 
> 

Go to:

**TYPO3 Backend -> Configuration -> $GLOBALS[‘TCA’](Table configuration array) -> tx\_arbeiten\_domain\_model\_diplomarbeiten -> types -> 1 -> showitems**

Copy the updated values from there, in this case:

> 
> showitem = **sys\_language\_uid,l10n\_parent,l10n\_diffsource,hidden,--palette--;;1,authorfirstname,author,author2firstname,author2,author3firstname,author3,title,schoolclass,link,--palette--;Datei 1;downloadgroup,--palette--;Datei 2;download2group,--palette--;Datei 3;download3group,--div--;LLL:EXT:cms/locallang\_ttc.xml:tabs.access,starttime,endtime**
> 
> 
> 

and paste them into your extension's TCA file (again at `['types']['1']['showitem']`)