Section 30-1-9-17 - Revocation(a) Every power, beneficial or in trust, shall be irrevocable, unless an authority to revoke it is reserved in the instrument creating the same.(b) This section does not apply to any power of attorney, regardless of when the power of attorney was created.(Formerly: Acts 1852, 1RS, c.113, s.17.) As amended by Acts1982 , P.L. 178, SEC.1.