What happens if the judges on a Court of Appeals decide a trial is unfair?

If judges on a Court of Appeals determine that a trial was unfair, they may reverse the lower court's decision, potentially ordering a new trial or remanding the case for further proceedings. This can occur if they find significant legal errors, procedural issues, or violations of a party's rights that could have affected the trial's outcome. The appellate court's ruling aims to ensure justice and uphold the integrity of the legal process.