Based 00 tbe fact tbat article 400 of tbe Civil TrialLaw (Spanisb acronym LEC) declares tbe preclusion of pleadings tbat coníd bave been made in a previous lawsuit but tbat were not made, tbeproblem arises on tbe impact tbis pbenomenon coníd bave 00 tbe arbitration. Taking into account tbat tbe LEC is not subsidiarily applicable wítbin it but tbat on tbe otber band it is recognised tbat tbe said preclusion is a component of tbejudged object. To wbat extent can tbe arbitration avoid being separated froto tbe general concept oftbejudged object?