A Subsidiary is an extension of a company having their parent company registered outside India.
A foreign can invest in a company in India through Automatic Route and through Govt Approved Route
No prior approval required in the case of Automatic Route
Filing of prescribed documents and intimation to RBI needs to be done within 30 days of receipt of investment in the case of Automatic route
FDI up to 100% is allowed under Automatic Route
Investment in activities / industries where automatic route is not available can be made with the approval of the Government under the Government Approved FDI method