Ay 2020-21 ITR DEFECTIVE

Dear Experts, I file itr 3 A. Y 2020-21. Tailoring income gross receipts 611853 and net profit 281453/- other source 21139/- total income 302590/- income tax status show itr filed is defective. Response notice 139(9) error code 1021. Errors descripttion.. Taxpayer is offering income under head business or profession. Hence as per prov. Of sec. 44AA THE TAXPAYER IS REQUIRE TO MAINTAIN BOOKS OF ACCOUNTS. HOWEVER AS SEEN THE TAXPAYER NOT FILL UP. PLS SUGGEST. CAN I FILL AGREE WITH DEFECT AND UPLOAD ITR AGAIN WITH 44AD PLS SUGGEST ME.