As guardians of the game, the ITF is responsible for the rules of tennis. Download them here
The ATP, the Grand Slam Board, the ITF and the WTA (as members of the Joint Certification Programme) require a high standard of professionalism from all officials certified as National, Green, White, Bronze, Silver and Gold under the Programme and all other officials working at ATP, Grand Slam, ITF and WTA tennis tournaments and competitions. Any official who wishes to raise concerns in relation to an Official’s behaviour can do so confidentially through the ITF’s Safeguarding department at the following email address: Officials.Confidential@ITFTennis.com. Download the Code of Conduct and Duties and Procedures for Officials here
Download CODE OF CONDUCT FOR OFFICIALS here
Download DUTIES AND PROCEDURES FOR OFFICIALS here