Sentence: I closed this defect after re-tested it.

[Sureshvemuri]

I was able to finish this task. So this Issue (A Defect posted while testing.) has been closed. (I closed this defect after re-tested it.)

Here, is the second sentence correct?
OR
Do I need to write - So this Issue (A Defect posted while testing.) is closed.

[Mister Micawber]

.
Defects are normally neither 'posted' nor 'closed'. You need to worry more about vocabulary than grammar; there is no important difference here between 'has been' and 'is'.
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_________________
Native English teacher at Mister Micawber's

[Sureshvemuri]

[Mister Micawber]

.
It is better to open a new thread when you change topic. Thread storage rates are extremely cheap, so there is no budget problem.

'Clarification' is usually uncountable, so I suggest "I need some clarification from you, Joseph."
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_________________
Native English teacher at Mister Micawber's