One of the most effective pieces in winning an appeal is issue selection. Most attorneys know, for example, that "de novo" issues are best on appeal: the Court of Appeal will not pay any deference to a trial court on issues of law.
And most attorneys also know that "abuse of discretion" issues are lousy on appeal. That is because the Court of Appeal will pay great deference to a trial judge's discretionary decisions.
But there is a significant minority of discretionary cases where the trial court so botches its analysis, or misunderstands the law, that the Court of Appeal will pay its orders no deference at all. Instead, on appeal the court will conclude that the trial court failed to exercise discretion. And a failure to exercise discretion is an abuse of discretion.
That is what happened in Southern Cal. School of Theology v. Claremont Graduate Univ. (D2d1 May 3, 2021) no. B302452 (non-pub.). The trial judge thought she did not have authority to apply a "negative multiplier" to reduce block-billed fees. That was incorrect. So back down the case goes.