Requirements and specifications of GLT
The provision as it is printed, and everything on Ruleside that turns on it.
Where GLT is used, the referee must test the technology's functionality before the match as set out in the Testing Manual. If the technology does not function in accordance with the Testing Manual, the referee must not use the GLT system and must report this to the appropriate authorities.
Verdicts that turn on it 1
Walk the tree to any of these and this clause is part of the answer.
The Laws of the Game are published by The IFAB and quoted here for the purpose of explaining the decisions on this site. Ruleside is not affiliated with The IFAB or FIFA. Every clause of The Field of Play that Ruleside cites.