To generate E-way bill along with e-invoice in BUSY,you can follow these steps:
Step 1:Make sure you e way Bill and E invoice Should be configured in GST/VAT and should be enabled in voucher configuration also in BUSY.
Step 2:Go to the transactions, and enter a sale voucher,
Step 3:While saving transport Details window will appear,Here you need to enable E Way Bill required and E Invoice Required,then the option will highlighted as Generate E way Bill within E invoice,Specify Y,then you able to generate E way Bill and E invoice together.