What steps should I follow to activate e-invoicing in BUSY?

You should follow below steps to activate E-invoicing in BUSY:
 Note: Your BUSY model must be Standard/Saffron/Enterprise/Emerald.
 : (BLS) BUSY License Subscription should be activate.
 Step 1: Login on Eway bill portal through https://ewaybillgst.gov.in/login.aspx 
 Step 2: In menu select registration option.
 Step 3: Click on 'FOR GSP'
 Step 4: A window will be appear and ask to send OTP, Which you will get on your registered email and mobile no.
 Step 5: Verfiy OTP.
 Step 6: Click on Add new and create GSP ID.
 Step 7: Mention GSP provider name as webtel electrosoft pvt. ltd and pinnacle teleservices pvt ltd both.
 Step 8: Copy user name.
 Step 9: Define last 3 character of username.
 Step 9: Mention the password then recheck password and save it.
 Step 10: Copy that user name.
 Step 11: In BUSY,Go in administration.
 Step 12: Select configuration option.
 Step 13: Select feature/options.
 Step 14: Then click on GST/VAT.
 Step 15: Enable E-Invoice required.
 Step 16: Then mention station and pincode.
 Step 17: Click on GSP configuration and define the GSP ID and password , which we have create through portal.
 Step 18: Save the configuration.
 Step 19: Then again go in administration.
 Step 20: Select configuration.
 Step 21: In dropdown click on voucher series configuration.
 Step 22: Select relevant voucher type and series.
 Step 23: Then enable the option of Generate E-Invoice after saving
 Step 24: Create voucher and generate e invoice as mention required information.