


Although there were some limitations for example, it could not create food, as that is one of the five Principal Exceptions to Gamp's Law of Elemental Transfiguration. Because of this, it was thought to have some degree of sentience. The room had the unique ability to provide or transform itself into anything that a witch or wizard required of it at that moment in time. The Room of Requirement, also known as the Come and Go Room, was a secret room within Hogwarts Castle, that only appeared when a person was in great need of it. Mostly people stumbles across it when they needs it, sir, but often they never finds it again, for they do not know that it is always there waiting to be called into service, sir." - Dobby explaining to Harry Potter about the unique nature of the Room of Requirement

Harry Potter: " How many people know about it?" Dobby: " Very few, sir.
