Succession occurs upon the death of the decedent. This is an essential prerequisite for the existence of the claim, since there is no right of inheritance before death. The heir must therefore at least experience this succession, although a duration beyond this is not required. Provided there is no condition precedent and there is no grounds for exclusion from the inheritance, the inheritance right basically accrues to the heir upon the death of the decedent (accrual of inheritance).
An exception to the requirement of experiencing the succession takes place in the case of unborn children. Thus, the inheritance accrues to the already conceived unborn child under the condition of its live birth. In this case, the inheritance must be suspended until the birth of the unborn child.
