Index: branches/5.2.x/core/units/categories/categories_config.php
===================================================================
diff -u -r16577 -r16591
--- branches/5.2.x/core/units/categories/categories_config.php	(.../categories_config.php)	(revision 16577)
+++ branches/5.2.x/core/units/categories/categories_config.php	(.../categories_config.php)	(revision 16591)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: categories_config.php 16577 2017-07-18 11:30:11Z alex $
+* @version	$Id: categories_config.php 16591 2017-07-19 07:50:28Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -402,7 +402,12 @@
 			'default' => NULL
 		),
 		'FormSubmittedTemplate' => Array ('type' => 'string', 'default' => null),
-		'FriendlyURL' => Array ('type' => 'string', 'not_null' => 1, 'default' => ''),
+		'FriendlyURL' => Array (
+			'type' => 'string',
+			'unique' => array(),
+			'error_msgs' => array('unique' => '!la_error_FriendlyUrlIsNotUnique!'),
+			'not_null' => 1, 'default' => '',
+		),
 		'ThemeId' => Array ('type' => 'int', 'not_null' => 1, 'default' => 0),
 
 		'EnablePageCache' => Array (