For the three qualifying rounds, balls must comply with the IFAB Laws of the Game as well as with the UEFA Equipment Regulations. The home club must provide the visiting club with match balls of excellent quality for its training session on the day before the match as well as for warming up before the match. These match balls must be the same as those used for the match.
The applicable official UEFA Champions League match ball determined by the UEFA administration must be used for all matches from the play-offs and for the official training sessions before these matches.
The use of two-sided substitution boards (preferably electronic) is compulsory.
For each match in the qualifying phase, the home club must ensure that two substitution boards are available.
Goal-line technology (GLT) is used in accordance with the IFAB Laws of the Game and the FIFA Quality Programme for Goal-Line Technology Testing Manual in all matches of the competition as of the play-offs for the purpose of verifying whether a goal has been scored to support the referee’s decision. That decision remains at the sole discretion of the referee and is final. A failure of the goal-line technology system may in no way prejudice the referee's decision. If necessary, for example in case of a system failure, matches will take place or continue without the use of GLT. Each club authorises UEFA and UEFA’s suppliers to install the relevant GLT system approved by UEFA for the competition in their stadium. Each club and any owner/operator of the relevant stadium must, at all times, provide such access to their stadium and stadium facilities as UEFA and UEFA’s suppliers reasonably require (including for all purposes related to the FIFA Quality Programme for GLT certification), and must provide such cooperation as UEFA and UEFA’s suppliers reasonably require in relation to GLT matters. Clubs must not use or move, and must ensure that no third party (other than UEFA or UEFA’s supplier) uses or moves, any of the GLT equipment or cabling installed at their stadium.
Pre-installed and certified GLT systems may be used in the qualifying phase, subject to UEFA’s approval and the visiting club’s consent. The host club remains fully responsible for the operation of the system and bears all the associated costs.