Overspecify

The customer overspecified the requirements and now we're contractually required to build it this way. Does he think he's an engineer?

Source: wiktionary

Manufacturers of sponge-rubber products have noted a tendency for designers and other users to overspecify.

Source: wiktionary

First, the study group discovered a tendency in the current system to overspecify a billet. For example, to write a billet for a laboratory technician, one could specify rate and rating, as an HM1, one could specify E-6 and NEC-8506, or one could specify both. Obviously, this sort of procedure creates distribution problems which could compound.

Source: wiktionary

As usual the customer overspecified the requirements, it's like asking for a car that seats 20 and fits in a compact car's parking space.

Source: wiktionary