Index: branches/RC/core/kernel/utility/unit_config_reader.php
===================================================================
diff -u -N -r10098 -r10134
--- branches/RC/core/kernel/utility/unit_config_reader.php	(.../unit_config_reader.php)	(revision 10098)
+++ branches/RC/core/kernel/utility/unit_config_reader.php	(.../unit_config_reader.php)	(revision 10134)
@@ -452,7 +452,7 @@
 		$error_messages = Array (
 			'field_not_found' => 'Field <strong>%s</strong> exists in the database, but <strong>is not defined</strong> in config',
 			'default_missing' => 'Default value for field <strong>%s</strong> not set in config',
-			'not_null_error1' => 'Field <strong>%s</strong> is NOT NULL in the database, but is not configured as not_null or required',
+			'not_null_error1' => 'Field <strong>%s</strong> is NOT NULL in the database, but is not configured as not_null', // or required',
 			'not_null_error2' => 'Field <strong>%s</strong> is described as NOT NULL in config, but <strong>does not have DEFAULT value</strong>',
 			'not_null_error3' => 'Field <strong>%s</strong> is described as <strong>NOT NULL in config</strong>, but is <strong>NULL in db</strong>',
 			'invalid_default' => '<strong>Default value</strong> for field %s<strong>%s</strong> not sync. to db (in config = %s, in db = %s)',
@@ -488,7 +488,7 @@
 
 					if ($field['Null'] != 'YES') {
 						// field is NOT NULL in database (MySQL5 for null returns "NO", but MySQL4 returns "")
-						if ( $f_name != $config['IDField'] && !isset($options['not_null']) && !isset($options['required']) ) {
+						if ( $f_name != $config['IDField'] && !isset($options['not_null']) /*&& !isset($options['required'])*/ ) {
 							$config_errors[] = sprintf($error_messages['not_null_error1'], $f_name);
 						}
 						if (isset($options['not_null']) && $options['not_null'] && !isset($options['default']) ) {