The process of filing a Revised Return is the same as filing an Original Return. The only difference is that in the Excel utility (Return Preparing Software), you need to select the ‘Revised’ return option and provide the Original e-Filing Acknowledgement number and Date of filing the Original return. Further, the assessee is required to select the section of return filing as u/s 139(5).
First you have to fill excel utility with all data. If you have already saved the previous excel file then just make the correction in the file where ever required. Select revised return as suggested above.
Generate the XML and upload it the efiling site again. Download the ITR-V and send to CPC in 120 days from date of upload.