(6)[ The Principal Director General of Income-tax (Systems) or the Director General of Income-tax (Systems), as the case may be, shall lay down procedures, formats and standards for issuance of certificate under sub-rule (5) and the Principal Director General of Income-tax (Systems) or the Director General of Income-tax (Systems) shall also be responsible for evolving and implementing appropriate security, archival and retrieval policies in relation to the issuance of said certificate.] [Inserted by Notification No. G.S.R. 1068(E), dated 25.10.2018 (w.e.f. 26.3.1962).]