Movement of goods from the place of consignor to the place of transporter up to a distance of 50 Km [increased from 10 km] does not require filling of PART-B of e-way bill. They have to generate PART-A of e-way bill.
As per the draft e-waybill rules released there is a time limit/shelf life for the each and every e-waybill issued through the common portal. The time limit is determined based on the distance like 1 day if the distance is 100 Kms and the same is extended to 15 days if the distance is beyond 1000 kms. Details can be accessed from here.