Gst cancellation

you can apply for its revocation by filing Form GST REG 21.the proper officer will revoke the cancellation by filing Form GST REG 22.

where I can saw GST reg 21 in GST website

Application for revocation of cancelled registration can be accessed within 30 days, from issuance of the Cancellation Order on the GST Portal, after logging in.

The path is Services > Registration > Application for Revocation of Cancelled Registration.

You can login using your earlier login credentials (i.e. credentials using which you were logging into the GST Portal earlier).

Check this link for FORM GST REG21
www.webtel.in/FORM_REG-21