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Severity & Priority in software testing

Severity refers to the level of impact, the defect has created on the users. Say If a particular defect has occured in an application and if more than 80% of the users are affected by the defect, the defect type is "Critical

Similarly if only 50% of the users are affected, in such cases the severity of the incident can be treated as "Seroius".

However priority refers to the "Urgency" with which the incident has to be fixed. In most of the cases a critical incident can be of high priority, however the vice versa need not be true.

For example a user might request the support team member to change the font size and font color of the text in a web page and in this case for the user, it might be of high priority, however it is not a critical or serious incident.


This field describes the impact of a bug.

Blocker Blocks development and/or testing work
Critical crashes, loss of data, severe memory leak
Major major loss of function
Minor minor loss of function, or other problem where easy workaround is present
Trivial cosmetic problem like misspelled words or misaligned text
Enhancement Request for enhancement


Contributed by:
Rohit kakria
I am software developer, moderator of xpode.com

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