The document discusses provisions relating to the cancellation and revocation of cancellation of GST registration. It states that a GST officer can cancel a registration on their own or upon application if the business has been discontinued, the proprietor has died, there is an amalgamation or de-merger, or there is a change in business constitution. Registration can also be cancelled if the taxable person is no longer required to be registered or if certain provisions have been contravened, such as failure to file returns for a specified period. The cancellation can be prospective or retrospective and the registered person must be given an opportunity to be heard. Upon cancellation, certain tax and other liabilities must still be fulfilled. A cancelled registration can be revoked