There will never be a definitive black and white this is what you must code every item, as there’s too much different opinion.
All you can do is use your best judgment and knowledge of the regulations.
The Niceic inspector came out to an Eicr I did last year and banged on about how you should be making sketches of the layout of the building.
Bear in mind it’s was a rather large solicitors offices.
I don’t recall this being on my testing and inspection exam nor in GN3 or the regulations.
He was told politely to ‘jog on’