What, if anything, is wrong here? "In cases where information here should take precedent over the official guides, it will be very clearly stated with the explanation."
Nothing is wrong.
Nothing is wrong, but the sentence could be edited down.
The spelling is wrong.
The spelling is wrong, and the sentence could be edited down.
The grammar is wrong.
The grammar is wrong, and the sentence could be edited down.
Congratulations to 40% of you. One definitely wrong item is "precedent," which should be "precedence." In addition, the comparison of "information" to "style guides" is not grammatical. Further, the sentence is wordy. I would rewrite as follows:
"The explanation will clearly state when information here should take precedence over that in the official guides."
Still not perfect, but much better!
(P.S. I probably should have added another choice: "The spelling and grammar are wrong, and the sentence could be edited down." Sorry about that oversight!)