FAULTS

It shall be a "fault":

if a service is not correct ;
if, in service, the shuttle:
is caught on the net and remains suspended on its top;
after passing over the net, is caught in the net; or
is hit by the receiver's partner;
if in play, the shuttle:
ands outside the boundaries of the court (i.e. not on or within the boundary lines);
passes through or under the net;
fails to pass over the net;
touches the ceiling or side walls;
touches the person or dress of a player;
touches any other object or person outside the court; (Where necessary on account of the structure of the building, the local badminton authority may, subject to the right of veto of its Member Association, make bye-laws dealing with cases in which a shuttle touches an obstruction).
 is caught and held on the racket and then slung during the execution of a stroke;
 is hit twice in succession by the same player. However, a shuttle hitting the head and the stringed area of the racket in one stroke shall not be a "fault";
is hit by a player and the player's partner successively; ortouches a player's racket and does not travel towards the opponent's court;

if, in play, a player:
touches the net or its supports with racket, person or dress;
 invades an opponent's court over the net with racket or person except that the striker may follow the shuttle over the net with the racket in the course of a stroke after the initial point of contact with the shuttle is on the striker's side of the net;
 invades an opponent's court under the net with racket or person such that an opponent is obstructed or distracted; or obstructs an opponent, i.e. prevents an opponent from making a legal stroke where the shuttle is followed over the net; deliberately distracts an opponent by any action such as shouting or making gestures; if a player is guilty of flagrant, repeated or persistent offences under Law .