Appointment of officers and employees

No person shall be considered for appointment to any post or vacancy on the ground merely, that he is entitled for such appointment according to,—

1. (i) any scheme framed, agreement entered or judgement, decree or order passed by any court, tribunal or other authority prior to the date of commencement of this Act;
2. (ii) any custom or usage; or
3. (iii) the principle that he is next in the line of succession to the last holder of office.