PART IV—ARREST AND SURRENDER OF PERSONS TO ICC
Restrictions on Surrender
56.
(2) If the ICC determines that the case is inadmissible, surrender shall be refused.
(3) If the ICC determines that the case is admissible, and there is no other ground for refusing or postponing the request, the request shall continue to be dealt with under this Part.
Postponement - admissibility challenge
EDIT.