Answered by: sarega99
Member Since Mar-2010 | Answered On : Sep 26th, 2011
The obvious answer is when a particular functionality does not work,then it becomes a functional defect. For eg. When a wrong date can be entered for eg.when only today's date can be entered and system allows to enter any past or future date,then is is a functional defect. Another example would be when the system crashes (a show stopper) that would be a functional bug.