This is also in the Big XII rule book:
Limitations on Reviewable Plays
ARTICLE 6. No other plays or officiating decisions are reviewable. However, the replay official may correct egregious errors, including those involving the game clock, whether or not a play is reviewable. This excludes fouls that are not specifically reviewable (Reviewable fouls: Rules 12-3-2-c and d and 12-3-5-a and 12-3-4-b).