Provisional GST registration cancellation requires Form GST REG-29 with identifiers, reason for cancellation and a sworn verification. Form GST REG-29 sets out the application for cancellation of provisional GST registration, requiring provisional ID, contact details, legal name as per PAN, correspondence address, Aadhaar and PAN numbers, reason for cancellation and whether any tax invoice was issued. The form contains a declaration of non-liability to registration and a verification clause requiring the declarant's full name, designation, place, date and signature of an authorised signatory.