Wrong details filed in d return

If you've filed an updated return (ITR-U) with incorrect details, such as FD interest, you cannot file a further revised return against it. Your options may include attempting a rectification process if possible. Be aware that discrepancies between your return and AIS/25AS might lead to a defective notice. A revised return can typically be filed against an original ITR before the end of the relevant assessment year, but this is not applicable for ITR-U.