Select the Option of SKD/CKD on E-way portal & follow following steps
As you have Raised the Single Invoice for delivering goods via different vehicles , Raise delivery challan for each of the vehicles drawing reference to the invoice number (same for all the delivery challans) Each Vehicle to carry delivery challan along with the certified copy of the invoice Eway bill to be generated for every delivery challan generated for different vehicles Original invoice to be sent along with the last consignment.