S. 197 : Deduction at source-Certificate for lower rate-New TAN-Assessee had deducted TDS at rates prescribed in certificates and had complied with necessary requirements of their deposit and filing of returns, assessee could not be treated as assessee in default merely on ground that certificates had not been issued on subsequent TAN obtained by assesse.[S. 197(2), 204, R. 28AA, Form No.26Q]