Income tax revised return u/s 139 [5]

Respects

1 Return of income for the Asst year 2013-14 is filed with in Sec: 139[1] time {ie CBDT has extended 04 days from the Deadline of Sep 2013 and return is filed during the extended time ]

2 It is Partnership firm ,[Civil contractors]  and Tax audit is applicable and all the forms were duly audited and filed.

3 Sec 143 [1] order recd along with Refund advice.

4 Considerable amt of Contract fee is omitted to be  credited in the P & L account [Nearly 100 laks] as the contractee has not paid the TDS in time,  26AS while filing the return did not have that relevant TDS fig.

5 The  bank account where the omitted contract amt. is dealt with was  not submitted for audit, 

The question is 

Revised return canbe filed for the omitted 100 lakhs?

What is the consequences ie 143[2] would be initited ?

pl clarify

Thanks sirs in adv.