Defect Priority and Severity Levels

Priority and severity level of defects needed to be defined as the development team cannot resolve all defects simultaneously. The test team needs to indicate how soon they want to get the defect fixed, and how big the impact on the functionality of the application under test is. Classification levels are defined as under:

Defect priority

Defect priority indicates the impact on the test team or test planning. If the defect blocks or greatly slows down test execution, you might want to select the highest grade for the defect priority.

Defect severity

Defect severity indicates the impact on the business of the client. If important functionality is blocked or if that functionality functions incorrectly, the test engineer mostly selects the highest defect severity.

It is clear that priority and severity qualifiers may differ which is depending on companies or projects but basically their value remains the same. It is depending on test engineer that how to assign defect priority and severity after measuring impact of each defect. Nevertheless he should always decide with care as the defect resolution time depends on this.

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