In the case in which the agreed, after having proposed exception of arbitration, not limits a formulate simple defenses and a lift exceptions in sense proper, but it proposes a question conventional, the first not can be considered renounced in reason formulation of the second, in as much as the exam of the question reconventional is ontologically conditioned to non -acceptance of the exception compromise, being the melitty of the latter incompatible with the exam of the question reconvectional question.