How is an Incorrect Line Call Violation handled when players make their own calls?

Players must make correct and honest calls on their side, clearly and promptly. In matches with no chair umpire, a referee, assistant referee or roving umpire who is directly observing the court can correct or overrule clear line call errors.

Normal procedure (offences are counted across the whole tournament, qualifying and main draw together):

1. First overrule: the call is corrected, the corrected player loses the point, and gets a soft warning (only one per player per tournament).
2. Second: corrected, point lost, formal Warning.
3. Third: corrected, point lost, plus a Point Penalty.
4. Fourth and fifth: Game Penalty.
5. Sixth: Default.

Departures: at the referee's discretion, officials may skip the warnings for a blatantly incorrect call (for example a serve that clearly lands in the box) and go straight to a Point Penalty, or do so on a first overrule for a player with a recent history of systematically erroneous calls. Four or more incorrect calls in the past three tournaments would normally be grounds. That approach is for calls the player knows, or is believed to know, are intentionally wrong, not an honest error on a very close ball.

These violations are tracked separately from the Code Violation point penalty schedule, but they combine with it when tallying Suspension Points.