We are registered dealer of GST. We are supplying materials within the state and outside the state. When we supply outside the state, some of our client want us to arrange for the transportation of material and we are working as pure agent, we arrange for transport and pay on behalf of our client and charge the amount to our client in the respective invoice. In CST, Transport was not included while calculating, so our query is this whether we should collect integrated GST on the amount of Packing and Forwarding charges or not? Also give the valid notification, or rule or whatever related to this?