Dear Sir,
As you are aware, eway bill can generated for a single document (Tax invoice, delivery challans,etc.)
In case you want to generate multiple eway bills for respective consignments under single invoice, you can do it as under:
1) The supplier should generate a tax invoice before dispatch of the first consignment;
2)Issue delivery challans for each of the subsequent consignments (with proper details), giving reference to the original invoice as issued in Step-1;
3) Generate separate eway bill for each of the consignments based on the delivery challan;
4) Each consignment shall be accompanied by copies of the corresponding delivery challan , duly certified copy of invoice & respective eway bill generated as per Step-3.
5) The original copy of invoice shall be sent along with the last consignment.
Remember cross referencing ( Original invoice reference in each of the DCs).