E Waybill Generation Peoblem

A seller of West Bengal sold goods to B in Goa and B sold goods to C in Odisha. Again C sold goods to D in Gujurat But goods are despatch by A from Bihar and goods sold to gujurat. Bihar is not Place of Business any of them. I want to knw how the e way bill generate and who will generate plz giv the suggestion with Sec. plz