TITLE II COOPERATION WITH THE INTERNATIONAL CRIMINAL COURT
CHAPTER VI ENFORCEMENT OF SENTENCES PRONOUNCED BY THE COURT
Article 34
2. In accordance with article 103, paragraph 2(a) of the Statute, the central authority shall also, if relevant, notify the Court of any circumstances which could materially affect the terms or extent of the imprisonment. The Court shall be given at least 45 days' notice of any such known or foreseeable circumstances. In accordance with article 103, paragraph 2(b) of the Statute, where the Court cannot agree to the said change in circumstances, it shall notify the central authority thereof and designate another State to enforce the sentence.
Notification of circumstances that could materially affect terms or extent of imprisonment
EDIT.