12 February 2015
yes as it is just an intimation or processing of return and not final assessment in many cases so still it can be revised if original itr was filed in timelimit u/s 139(1).
12 February 2015
You can check whether the assessment is completed or not by log in to the IT site. If assessment competed you can't revise. Regarding 143(1), if it is issued and there needed any correction, You can only file a rectification return. Revision can be done only if any mistake is founded by the assessee.