Tds of nri deposited in 94 instead of 195

For Deductor's convenience, CPC(TDS) has established processing logic in the system that can accept a Single Challan for reporting of Tax Deposited in following circumstances:

• Payment of Tax Deducted under different sections of the Income Tax Act, 1961:
• The CPC(TDS) system gives credit of TDS against different sections of the Act, even though a specific section has been quoted in the challan.
• Example: The challan used for payment of TDS relevant to Section 192 of the Act can also be used for the purpose of reporting tax deposited under Section 194 of the Act.

  Situation prior to Financial Year 2012-13	Consumption of Challan in TDS Statement on the basis of Section quoted in the Challan details
  Situation after Financial Year 2012-13	Section quoted in Challan, at the time of depositing Tax deducted/ collected is irrelevant for the purpose of consumption in TDS Statement.

u can correct tds challan on line if u have dsc and register with traces 

YES. You can use same challan while filing TDS return OR also you can change section code in TRACES site by 'OLTAS challan correction' option.