While paying TDS on sale of property (form 26QB) on 11/12/2014 by mistake seller’s PAN number is filled in buyer column & buyer’s PAN no. is filled in seller’s column. Bank says as its online payment they are not authorised to make changes in PAN. How to make corrections in the challan data & give credit to seller of property. I have called NSDL & Traces they say there is no system in place to rectify the same. I have to write letter to Income tax or TDS ? can I ask buyer to file for refund of TDS? where to go & what to do? please help its urgent!!!!!!!!!!