Income tax deposited against wrong code

you cannot do anything.  

You can keep it as excess in 194I and pay again for 194C.

Later, adjust the 194I excess for any future Liability.

Do try to speak with the ITO of your org's jurisdiction

I think you should be able to revise your TDS return. The deductee will demand the TDS to be rightly deposited and TDS return filed immediately. 

Wait for others to reply.

Actually our problem is this - We should have deposited I tax under 194J for Rs 247578.00 and Rs 287922.00 against 194C , instead of this what we did - we had deposited Rs 310500.00 against 194J and Rs 225000.00 against 194C  . ( by challan)

correct amount of challan  should be -   against 194C ( Rs 225000.00+62922.00)= Rs 287922.00

                                                               against 194J (Rs 310500.00-62922.00)=    Rs 247578.00

Now by revised return challan amount can not be changed , so correction through revised return is not possible .

With in a weeks time we can reuqest your Banker's to do a correction - specific format is available in earlier post in CA Club.

Otherwise pl write the ITO TDS circle they will pass the order in accordance with this matter.