Notice 142 (1)

It seems you have not filed your IT returns. This notice is to remind you that you are required to file your IT returns for the relevant year.

The notice u/s142(1) is issued to the assessee where the ROI is not filed ,within the due date date of section 139(1) I.e 31th July Since the time limit to file the ROI is 1 year from the end of relevant A.Y. but here in this case u have to file ROI the time prescribed under the notice nd 1 year from the end of relevant A.Y whichever is earlier...

I have filed my return in timely.

Look at the notice.. it dept is looking for explanations regarding specific questions that they have w.r.t. your return, in case, and as you say, you have

As correctly stated by Pavithra, the department might be looking for some explanations about certain items in your ITR or might require a statement of assets and liabilities. It is therefore important to see what the dept has stated in the notice..