21. The Associate Secretary General shall keep the register of declarations of aptitude up-to-date and shall enter therein, in respect of each division, the list of the candidates declared apt to be appointed to the Tribunal.
A declaration of aptitude is valid for a 3-year period from its entry in the register.
The Associate Secretary General shall strike out an entry upon the expiry of the validity period of the declaration of aptitude or when the person is appointed to the Tribunal, dies or asks to be withdrawn from the register.