As per rule 138 of the CGST Rules, 2017, till such time as final rules are issued, the Government may, by notification, specify the documents that the person incharge of a conveyance shall carry while the goods are in movement or in transit storage. As and when the new e-way bill rules are notified, the person transporting the goods shall carry the said e-way bill generated from the common portal along with the invoice (challan in the case of movement other than by way of supply)
(FAQ 37: MINING)