GST on Supply of Service by an Indian Consultant to its Foreign Principal whose customers who are located in India

1. We are an Indian Agent for a Foreign Principle Co.

2. Foreign Company is selling goods to Indian Companies whom the agent purpose.

3. The goods are purchased by Indian Companies in USD/EURO etc.

4. We are getting Consultancy/Advisory Charged on the Invoice made for Indian Co. from the Foreign Co. on Foreign currency basis and it is remitted through a Foreign Inward Remittance Certificate Method. Foreign Co. remitted payment in their Currency and we received in Indian Rupees.

Please suggest me whether GST is applicable or not ?