It is important to bear in mind that this action must be carried out through a will and be for one of the causes listed in the Civil Code, as if it is not a justified cause, the forced heir cannot be dishinherited. Disinheritance of descendants. This can happen if the descendants have denied material support to the parents without just cause or mistreated them and inflicted serious verbal abuse. In addition, court rulings have made it clear that psychological abuse can be a cause for disinheritance as well. Disinheriting the spouse. Serious and/or repeated breaches of conjugal duties. Incurring in the causes for the loss of parental authority. Denying material support to the other spouse or to the children of both spouses. And lastly, having tried to kill the spouse. Disinherit parents and ascendants. Having legally lost parental authority. Denying maintenance to children or descendants, without just cause. When a parent has tried to kill the other parent. And of course, having incurred in abandonment, prostitution or corruption of the the children.