Amendment of registration: prescribed notification and officer review govern changes, with hearing before any rejection. Every registered person or person with a Unique Identity Number must inform the proper officer of changes to registration information in the prescribed form, manner and period. The proper officer may approve or reject amendments based on furnished or ascertained information, subject to prescribed procedures and timelines, with prescribed particulars not requiring approval and a mandatory opportunity to be heard before rejection. Central Act decisions on amendments are effective under this Act.