Part 2
Specific provisions
Section 2
15. Postponement of the execution of requests for assistance
1. The execution of a request for judicial assistance may be postponed:
(1) until there is a decision concerning a challenge of admissibility under articles 17 to 19 of the Statute, unless the International Criminal Court has expressly ordered that the Prosecutor may pursue the collection of evidence pursuant to article 18 or 19 of the Statute
Postponement - admissibility challenge
EDIT.