It is an empowerment of one person or body with legal right or power to perform a specific action by getting official permission or sanction for something to happen or getting official permission or sanction for something to do. It is to endorse, empower, justify or permit by recognized or proper authority such as custom, evidence, personal right, or regulating power. Authorization could refer to a document that confers some power, for example a legislation authorizing working of a federal agency for a specific period or a document that specifies some contractual relationship with granting some rights and powers such as right to give order or decisions.