Matching this to the Design and Spec. If you are an old hand developing Projects you know a really sticky part is when the project goes to bid. A faulty set of Contract Documents make the problem worse. A majority of successful Contractors became that by accident and are set in their ways. After Construction Contracts are signed Contractors often insist on changing the Documents.
Tempers flair and fixing blame becomes an aggravation.
A sticky problem anytime it occurs. The ego challenge between Professional and Code Officials are explosive, often resulting in problems after the fact. Even when the explosion is not visibly evident, the egos stew during the project. We have experienced both ways. Much fewer field related code problems.