Allowing the petition the Court held that , when the assessee brought to the notice of the Assessing Officer the details and information furnished by it by letter dated August 22, 1992, the Assessing Officer rectified the assessment order by an order passed under section 154 wherein it was held that relevant details were filed by the assessee and after going through the documents, allowed exemption under section 10(15)(iv) . Thus the condition precedent for reopening the concluded assessment of the assessee was absent in the present case. In such circumstances, issuance of the notice under section 148 of the Act was clearly without jurisdiction and was therefore illegal and invalid.( AY.1990-91)