Shareholding of indian pvt. ltd. in foreign company

Hello Friends,

I want to ask what are the responsibilities of a pvt. ltd. company from a corporate law and taxation point of view if it has shareholding in a foreign company.

e.g. Company A is a foreign company. It gives 50% of its shareholding to a Pvt. Ltd. company  'B' in India. Note that 'B' has not invested anything but is a shareholder in company A. Now from an Indian corporate law and taxation point of view what are the obligations of B if any?

Thank you for guidance.

Regards

Pathak