The balls for the match and the official training sessions prior to the match are supplied by UEFA and must be used to the exclusion of any other balls.
The use of two-sided substitution boards (preferably electronic) is compulsory.
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 the competition for the purpose of verifying whether a goal has been scored to support the referee’s decision. That decision remains under the sole discretion of the referee and is final. A failure of the goal-line technology system may in no way prejudice the decision of the referee. 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.