Section 12 of Hyderabad Municipal Corporation Issue Of Stock Certificates Bye Laws, 1973

12. Notice of Change of address :- The warrant for interest will usually be posted on the day before the day on which the interest falls due. Any notice of change of registered address of the holder or of the address of the Holder's banker or agent must reach the Bank at least three clear days before the said date as otherwise the warrant will be posted to the address previously recorded.