(1) A testamentary disposition may be avoided to the extent that the testator was mistaken as to the contents of their declaration or had no intention whatsoever of making a declaration with these contents and it is to be assumed that had the testator been aware of the situation, they would not have made the declaration.
(2) The same applies to the extent that the testator was induced to make the disposition by the mistaken assumption or expectation that a circumstance would occur or not occur, or was unlawfully induced by duress.
(3) The provision of section 122 does not apply.