Okla. Stat. tit. 60, § 60-175.715
Duties not created
DUTIES NOT CREATED
A. This act does not create or imply a duty for an authorized
trustee to exercise a power to distribute principal, and impropriety
shall not be inferred as a result of the trustee not exercising a
power conferred by Section 3 or 4 of this act.
B. An authorized trustee does not have a duty to inform
beneficiaries about the availability of the authority provided by
this act or a duty to review the trust to determine whether any
action should be taken under this act.