Your post is very confusingly written. This is the correct grammar for your original sentence: Lags, gaps, and inaccuracies persist in the vital information upon which coordination depends . I do not understand the rest of your problem, if any exists.
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Mister MicawberYour post is very confusingly written. This is the correct grammar for your original sentence:Lags, gaps, and inaccuracies persist in the vital information upon which coordination depends.I do not understand t
NewagemammothI was trying to ask "Is where can be used instead of 'upon which' ?"No, it cannot. 'Depends' requires' 'upon'.
Newagemammoth"Lags, gaps, and inaccuracies persist in the vital information upon which coordination depends."You need to make the final clause into a sentence that includes the antecedent noun to see the problem with "where."