How for the same e-way bill can enter multiple modes of transportation like road , ship ,air ?

A single e-way bill may be used to travel through multiple modes of transport before it reaches its destination. The EWB can be updated by updating the vehicle number. Let's say that the goods move from Cochin to Chandigarh by road, ship and air. The taxpayer first generates an EWB by going from his home to shipyard and entering the vehicle number. The taxpayer will then submit the goods to shipyard and update the mode and number of transportation on the electronic bill system. The taxpayer or the concerned transporter will then update his/her movement from shipyard to airport by entering the vehicle number. Next, the taxpayer or transporter updates using the 'update car number' option and the Airway Bill number. Once he reaches Delhi, he updates the movement through road using vehicle number. The e-way bill can now be updated with multiple modes of transportation.