I have written the below sentence to say that "due to feedback on A, fixes are
required in B also, so we will do the required modifications'.

> Aのフィードバックを確認致しました上、それに応じてBにも修正する箇所が発生しましたので、当該修正に対応させて頂きます。

Is `確認致しました上` incorrect here? I am trying to say "Upon checking X, we found
that Y needs to be fixed as well'
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2017-01-10T13:26:08.560
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2017-01-10T14:37:19.937
2017-01-10T13:56:41.810
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question
translation
What is the correct usage for 確認致しました上?
「V + 上」 has two major meanings. One is temporal order: "then" or "after". The
other is "in addition". Two events connected with 「上」 is rather independent of
each other.

So your sentence would mean "I checked the feedback on A. In addition, I found
..."

Maybe this is not what you want. You should say 「確認致しました **所** 」.

「Vした + 所」 is basically translated as "when". Its nuance is "I did V and what I
got/found is ...", which matches this situation.
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2017-01-10T14:37:19.937
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2017-01-10T14:37:19.937
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answer