Definitions of prescribed right
a right that a person can claim because he or she has had that right for a long time or has been allowed to act in a particular way or receive a particular benefit etc for a long time
When we moved in our neighbour told us that he had a prescribed right to cross part of our garden to gain access to his house.
a legal right
Since 2000, a legally prescribed right to obtain data from a third person has been in existence.