`campaign_expired` ENUM('Y','N') NOT NULL DEFAULT 'N',
`campaign_locked` ENUM('Y','N') NOT NULL DEFAULT 'Y',
`campaign_ended` TIMESTAMP NOT NULL DEFAULT '0000-00-00 00:00',
-`locked_reason` TINYTEXT,
+`locked_reason` TINYTEXT NOT NULL,
`locked_timestamp` TIMESTAMP NOT NULL DEFAULT '0000-00-00 00:00',
`status` ENUM('PENDING','ACTIVE','LOCKED') NOT NULL DEFAULT 'PENDING',
PRIMARY KEY (`id`),