(a) General rule.--The convening authority or other authorized party may order a proceeding in revision. A proceeding in revision may be ordered if there is an apparent error or omission in the record or if the record shows improper or inconsistent action by a court-martial with respect to the findings or sentence that can be rectified without material prejudice to the substantial rights of the accused. (b) Revision not authorized.--In no case may a proceeding in revision: (1) reconsider a finding of not guilty of any specification or a ruling which amounts to a finding of not guilty; (2) reconsider a finding of not guilty of any charge, unless there has been a finding of guilty under a specification laid under that charge which sufficiently alleges a violation of a punitive section of this title; or (3) increase the severity of the sentence unless the sentence prescribed for the offense is mandatory.
Pennsylvania Legal Code