Chances to avail benifit of ex serviceman

Sir i am ex serviceman retired on nov 2015 since then i had got no employment and had applied for the various posts including bank ssc and other state govt jobs. now i got a joining /appointment letter from one of the employer for which i had to do medical and other formalities. Now in the name of bright carrier i have only one chance to avail the benefit of ex serviceman quota in govt job state/central. As per new notification aug 2014 an ex serviceman can avail the chances of employment if prior to the joining of any govt job (i had applied for the other posts also) he should give the details of the application/registration number and the department in which applied prior joining to the current employer. but whether the details has to be given separately with the covering letter OR along with the self declaration certificate on joining /and whether it should be approved/attested by our sanik board/court in affadivit form. or a separate letter citing the details of previous applications. please guide