Wrong pos

Transporter register is irrelevant to the GST. 

The Goods and Services Tax (GST) is a destination-based indirect tax, which means that an end-user is required to pay tax on goods and services they purchase or consume. The state that consumes the goods or services collects such tax and not the manufacturer state.

To understand the applicability of GST, it is necessary to know if the transaction is an intrastate (within the same state) or interstate (between different states) supply. 

If the supply of goods happens within the same state, CGST and SGST will be applied by the supplier. Similarly, if the supply happens between two different states, the supplier charges IGST.