Defect Severity

A defect is the representation of an misunderstanding of specification or syntax error, where representation is the mode of expression. Defect severity is the classification of a defect based on its level of destructive impact on the requirements specification of the Software.

Defect Severity :
Following are some of the commonly used defect severity classes in the software development:

  1. Critical –
    A defect that completely obstructs the execution of a core functionality/feature of the software is classified a critical defect. This defect affects the critical functionalities and data and makes the testing of the software difficult. It is represented by S1.

    Example: We have a login interface for a mobile application. When a user taps on forgot password, the user is asked to enter the OTP which he/she receives on his registered mobile number or email. Upon entering the OTP (correct/incorrect), a loader is displayed and continues indefinitely. Since, the user is not able to login to access the functionalities of the mobile application, it is a critical defect.

  2. Major –
    A defect that makes a major functionality/feature to behave grossly away from what is specified in the requirements specification of the software is classified a major defect. This defect affects the major functionalities and data. It is represented by S2.



    Example: We have a login interface for a mobile application and the system is allowing the access to the platform under the entered username without validating the password for its respective username. As a result, an unauthorised user can access the account leading to a major defect causing theft of personal data and criminal activity.

  3. Minor –
    A defect which occurs when a functionality/feature does not behave as intended or exhibits some unnatural behavior, however the functionality/feature as a whole is not much impacted is classified a minor defect. This minimally affects the functionalities and data. It is represented by S3.

    Example: We have a login interface for a mobile application. The user enters his username and password, and after validation the user successfully logins to his/her account but is displayed “Login Unsuccessful Please try again later” prompt window instead. This is a minor defect as he is just shown a wrong prompt window.

  4. Trivial –
    Any cosmetic defects such as misplaced images, spelling mistakes or alignment issues or font casing is classified a trivial defect. This defect does not affect functionalities and data. It is represented by S4.

    Example: We have a login interface for a mobile application and the login credentials have a incorrect order that is the password field is placed above the username field.

Don’t stop now and take your learning to the next level. Learn all the important concepts of Data Structures and Algorithms with the help of the most trusted course: DSA Self Paced. Become industry ready at a student-friendly price.

My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.


Article Tags :

2


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.