Cal. Probate Code - PROB § 21220. Section 21220.
On petition of an interested person, a court shall reform a disposition in the manner that most closely approximates the transferor’s manifested plan of distribution and is within the 90 years allowed by the applicable provision in Article 2 (commencing with Section 21205), if any of the following conditions is satisfied:
(a)
A nonvested property interest or a power of appointment becomes invalid under the statutory rule against perpetuities provided in Article 2 (commencing with Section 21205).
(b)
A class gift is not but might become invalid under the statutory rule against perpetuities provided in Article 2 (commencing with Section 21205), and the time has arrived when the share of any class member is to take effect in possession or enjoyment.
(c)
A nonvested property interest that is not validated by subdivision (a) of Section 21205 can vest but not within 90 years after its creation.