If a change request says at the top “REQUEST FROM CUSTOMER. SEE CUSTOMER REQUIREMENT DOCUMENT X.”, guess what?
It’s a fucking customer request, and you can find the fucking associated requirement in document X….which means….(drum roll please)…it’s ALSO A CUSTOMER REQUIREMENT! And guess what else? I will tolerate stupidity of this sort when I’m at work on work-time, but when I’m on vacation and you call me with this kind of stupidity (especially when you’re the fourth person to interrupt for stupid reasons today), I will rip you a new one as best as one can via cellphone, and I’ll do it loud enough that all the rail gamers will hear it and laugh at you. So there.