Notice from ito for information of 2003-04

Hi friends,

one of my client is been called to give information regarding TDS return of FY 2003.04 and 2004.05 by ITo.

client does not kept books of FY 2003.04 and 2004.05.so he is unable to give information.it pertains more than six years.

can ITO inquired for long back period

Please any one can suggest..

Thanks

ca k.j patel