In unlawful or impossible conditions in testamentary dispositions, what is the effect? If in a promissory note, on its face it does not say or it cannot be determined whether it is conditional or It does not result in a void testamentary disposition. pure obligation. But there is a provision in the note Under the law in succession, such unlawful or that upon receipt from the estate there is no impossible condition is deemed not written. assurance that the creditor will receive in the estate, which presupposes a conditional obligation. Note however, the court treated it as a pure