referred to therein. In this case even if it is assumed that to decide the question regarding entitlement of family pension which according to the learned counsel is a dispute relating to service, it was necessary for the CAT to enter a finding as to who is the legally wedded wife of the late Raman, as I stated, Ext.A6 does not involve any such finding. Ext.A6 only set aside the order for payment of pension passed by respondent No.4 and directed a fresh enquiry into the matter. It is nobody's case stated that consequent to Ext.A5, report any of the contesting parties have approached the CAT again either to accept Ext.A5, report or with their grievance to that report and the CAT has passed any order. So far as the dispute regarding marital status of respondent No.1 and appellant is concerned the CAT has not passed any order even if it is assumed that the CAT had the authority to decide that issue also being relevant for the decision as to who is entitled to the family pension. Explanation VIII to Section 11 only said that even decisions entered by a court or Tribunal of limited jurisdiction on matters directly and substantially in issue before it would operate as res judicata in the subsequent suit. To operate as res judicata, there must be a decision by the Tribunal or court, be it of limited jurisdiction.