what are defect categories code example

Example: what are defect categories

Tbere are different defect categories:
Wrong: When a requirement is implemented incorrectly
Missing: It is a variance from the specification,
an indication that a specification was not 
implemented or a requirement of the customer is not met
Extra: A requirement incorporated into the
product that was not given by the end customer. 
It is considered as a defect because it is 
a variance from the existing requirements