When the registration has been cancelled by the proper officer on his own motion and not on the basis of an application by the registered person, then the registered person, whose registration has been cancelled, can submit an application for revocation of cancellation of registration, in FORM GST REG-21, to the Proper Officer, within a period of thirty days from the date of the service of the order of cancellation of registration at the common portal, either directly or through a Facilitation Centre notified by the Commissioner. The period of 30 days can be extended by :

• By the Additional Commissioner or the Joint Commissioner, as the case may be, for a period not exceeding thirty days.

• By the Commissioner, for a further period not exceeding thirty days, beyond the period specified above.

However, ifthe registration has been cancelled forfailure to furnish returns, application for revocation shall be filed, only after such returns are furnished and any amount due as tax, in terms of such returns, has been paid along with any amount payable towards interest, penalty and late fee in respect of the said returns. (c)On examination of the application if the Proper Officer is satisfied, for reasons to be recorded in writing, that there are sufficient grounds for revocation of cancellation of registration, then he shall revoke the cancellation of registration by an order in FORM GST REG-22 within a period of thirty days from the date of the receipt of the application and communicate the same to the applicant. For More Info Click Revocation of Cancellation in GST Registration.