It is compulsory to file B/S and P&L data when filing ITR 4. If b/S and P/L are not made, data needs to be entered in the column showing no books of accounts maintained and declaring the Gross Receipts and Cash Bal, O/s debtors ,O/s creditors if any.
In your case right now, you shall have to make corrections in your ITR 4 showing whatever is your gross receipts in the option at the end of B/S & P&L column where data for assessee's who have not maintained books is to be entered. Regenerate a fresh xml and submit on the efiling website against the option efiling in response to notice u/s 139(9).
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