Itr-4 considered defective u/s. 139(9) but not accepted by assessee on link sent by cpc...

1) ITR-4 filed before due date to claim refund... considered by CPC as defective U/s. 139(9) & asked to file return through link sent online 2) Assessee denied it as defective as mandate no. 53 of ITR-4 was applicable to him 3) CPC finally required to file ITR-4 with P & L account & Balance sheet 4) NOW under which section ITR4 to file by assessee to avail refund (i) U/s. 139(9) (previously assessee refuted that his ITR is not defective) OR (ii) revised return u/s. 139(5) ...?