1The interpreter role may not be carried out by the following:
aa minor, a person who is prohibited to interpret, a person whose legal capacity to act has been removed, a person mentally ill, a person who has been prohibited or suspended from the right to exercise public duties or a profession;
ba person under precautionary measures;
ca person who may not be questioned as a witness, a person who has been summoned as a witness and expert in the same or a joined proceeding. However, when a person who cannot hear, cannot speak or who cannot hear nor speak, is questioned, the interpreter may be one of his/her relatives, provided they do not have any incompatibility.