While using the excel based software [available on the official website of IT deptt] for online filing of ITR; when one goes to the column on TDS [other than salaries- i.e 16A]; software guides you to enter a unique 8 character TDS certificate number. Whereas I understand that the TDS certificate [under 16A] carries only a 6 character certificate number... Is it a bug/mistake in the software ? or is it that one has to fill not the 6 digit tds certificate number but the 8 character tds receipt number.