The assessee received the intimation dated March 28, under section 143(1) on May 18, 2008. Since the time limit for filing a revised return under section 139(5) had expired on March 31, 2008, it filed a rectification application under section 154. The Assessing Officer rejected the rectification application on the ground that the assessee ought to have filed a revised return on or before March 31, 2008.The assessee filed revision application which was rejected. The assessee filed second revision petition which was also rejected. On writ allowing the petition the Court held that   the rejection of the revision application filed by the assessee under section 264 was not justified as the Officers acting under the Income-tax Department were duty bound to extend the substantive benefits that were legitimately available to an assessee. The rejection of the application for rectification by the Assessing Officer under section 154 was unjustified, since the assessee was entitled to the substantive benefits under section 10B and the delay, if any, was attributed on account of the system. Even if the intimation dated March 28, 2008 was dispatched on the same day after it was signed, in all likelihood, it could not have been received by the assessee on March 31, 2008 to file a revised return on time.  The assessee was entitled to rectification under section 154 of the Act. (AY. 2006-07)