Gen3sis

I have a similar question relating to other door furniture. I have a door closer and retainer fitted to my fire door and now this question has been asked I am worried that the integrity of my door could be compromised by all the holes that have been made in it for fitting these items. The door was fitted by a joiner and i have no paperwork for it, should I legally have documentation for my door and how would i find out about its integrity without it?