A1. Whether the transport vehicle was yours or Third party? If its third party transporter, try getting the details as to vehicle log book, toll receipt if paid in cash, Fasttag statement etc.
A2. Also check whether the invoice/ e-way bill has been manually sealed by State Motor vehicle/ Transport Department (check-post). That is also a proof of movement through check-post.
B1. Ask for the RFID report from the GST department, which is the relied upon document for issue of show cause notice.
B2. Try to verify the accuracy of the RFID report with the Toll plaza (most toll plazas have details with them only for 2 years, after which it is with Third Party data management). However, preempt the option of verifying the accuracy of Department report.
C1. Try to provide other evidences of movement such as loading/ unloading charges (if paid to union welfare board), stock register, transportation charge reciepts, etc...
C2. Keep in mind the recent Supreme Court ruling in Ecom Gills.