Index: branches/unlabeled/unlabeled-1.9.4/core/units/custom_data/custom_data_config.php
===================================================================
diff -u -r5451 -r7829
--- branches/unlabeled/unlabeled-1.9.4/core/units/custom_data/custom_data_config.php	(.../custom_data_config.php)	(revision 5451)
+++ branches/unlabeled/unlabeled-1.9.4/core/units/custom_data/custom_data_config.php	(.../custom_data_config.php)	(revision 7829)
@@ -74,7 +74,7 @@
 					'ItemSQLs'			=>	Array('' => 'SELECT %1$s.* %2$s FROM %1$s'),
 
 					'Fields'			=>	Array(
-											    'CustomDataId' => Array(),
+											    'CustomDataId' => Array('type' => 'int', 'not_null' => 1, 'default' => 0),
 											    'ResourceId' => Array('type' => 'int', 'not_null' => 1, 'default' => 0),
 											),
 				);