Need to file REG 01 online on portal A Part of form Reg 01: Need to provide Mobile No. , Email ID , PAN . The PAN no will be valid by CBDT, & mobile no & Email ID will validated one time password sent . On successful verification Temporary Reference No. is generated. Using TRN the applicant can Furnish the B part of Form REG 01. And of the application found to be in proper order by officer the Registration certificate will be issue in form REG 06.