This information for your reference because the government not notified effected date of e way bill. But the situation of e way generation is when you are raising a bill abobe Rs. 50,000/- you must be generate e way bill this information already spreaded by govt.
E way bill was started on trial basis from 16.1.2018 to 31.01.2018 and was going to start full fledged from 1.2.2018 but government has postponed till future date that is still that date is not notified by government.
Please note if you are supplying in state of uttra pradesh you will still have to generate eway bill on their own site.Its still compulsory thare under their previous provisions.