Business Reading: Understand “functioning as designed”

Whether you have or not, the phrase usually means that someone who does not understand the working process of the users designed the system. So, how does this happen, where users cannot adequately use the system that the developers produced?

In theory, if the users provide their requirements and these requirements are what the developer designs, then there shouldn’t be such a gap between what was intended versus what was understood.

Source: https://www.west.com/blog/interactive-services/functioning-as-designed-is-not-the-same-as-designed-for-functioning/