short deduction In tds

download conso file from tin nsdk..than made required corrections and file the same

if tax is already paid but credit not given to the deducter.. Then you have to do deductee correction if the credit to be consumed from same challan, or If you want to give credit from another challan you have to add deductee row and adjust base amount to both with giving tax credit to new deducter. You can do the correction online if have DSC or request consolidated file and do manual.