TYPO3 Core

The PAGE_TSCONFIG_ID feature is not the right instrument here.
The PAGE_TSCONFIG_ID marker can be used in other configuration options, but seems not to be the intended one here.

The code in TreeDataProvideFactory.php only assigns the value of this property as integer:

if (isset($treeConfiguration['rootUid'])) {
    $dataProvider->setRootUid(intval($treeConfiguration['rootUid']));
}

I fear this is somewhat a missing feature.

Trying to achieve something similar with a regular select field and ###PAGE_TSCONFIG_ID###, but the value is not replaced. Instead, there is an error message:

1: Attempt to insert record on page '[root-level]' (0) where this table, tx_kofomi_domain_model_locations, is not allowed

(The table in question is only allowed in sys-folders...)
Strangely enough, the error message refers to the 'parent' table, not the one that should gain a new entry - which anyway never shows up in the DB.
###CURRENT_PID### works (but is of no help).

TYPO3 CMS 6.1.1, php 5.4.10 (with XCache)

/// TCA

$TCA['tx_kofomi_domain_model_events'] = array(
[...],
'location' => array(
'exclude' => 0,
'label' => 'LLL:EXT:kofomi/Resources/Private/Language/locallang_db.xlf:tx_kofomi_domain_model_events.location',
'config' => array(
'type' => 'select',
'foreign_table' => 'tx_kofomi_domain_model_locations',
'foreign_table_where' => "ORDER BY tx_kofomi_domain_model_locations.name",
'size' => 5,
'autoSizeMax' => 10,
'minitems' => 0,
'maxitems' => 1,
'wizards' => array(
'_PADDING' => 2,
'_VERTICAL' => 1,
'_POSITION' => 'right',
'_DISTANCE' => 0,
'_VALIGN' => 'middle',
'suggest' => array(
'type' => 'suggest',
),
'edit' => array(
'type' => 'popup',
'title' => 'Edit location',
'script' => 'wizard_edit.php',
'icon' => 'edit2.gif',
'popup_onlyOpenIfSelected' => 1,
'JSopenParams' => 'height=350,width=580,status=0,menubar=0,scrollbars=1',
),
'add' => array(
'type' => 'script',
'title' => 'Add new location',
'icon' => 'add.gif',
'params' => array(
'table' => 'tx_kofomi_domain_model_locations',
'pid' => '###PAGE_TSCONFIG_ID###',
'setValue' => 'prepend'
),
'script' => 'wizard_add.php',
),
'list' => array(
'type' => 'script',
'title' => 'List locations',
'icon' => 'list.gif',
'params' => array(
'table' => 'tx_kofomi_domain_model_locations',
'pid' => '###PAGE_TSCONFIG_ID###',
),
'script' => 'wizard_list.php',
)
)
),
),
[...]
};

/// TCEFORM
TCEFORM.tx_kofomi_domain_model_events.location.PAGE_TSCONFIG_ID = 44

// Reference:
http://docs.typo3.org/typo3cms/TCAReference/Reference/Columns/Select/Index.html
-> "Simple selector box with TSconfig markers"