TDS wrong section written

Yes it will effect both the deductor as well as deductee deductor will have problem in determining the nature of expense and the auditor also find this mistake, and the deductee also have problem in head of income it will be a interest income for him rather than professional, so you should revise the return as soon as possible.

Revise the return... only section number to be changed. that can be done online on traces using DSC.