What options do I need to select in BUSY for smooth e-invoicing?

To configure for automatic generation of E invoice BUSY, you need to follow these steps:
Step 1: Log in to the e-invoice portal with your credentials.
Step 2: From the main menu, select API registration. Click on the ‘Create API User’ tab under User Credentials in the API registration menu.
Step 3: Authenticate this with OTP then select through GSP to integrate the APIs through GSP. 
Step 4: Select the GSP Name either Webtel Electrosoft Private Limited or Pinnacle Finserv Advisory Private Limited.
Step 5: Create Username and Password and click on Add.
Step 6: Now, Open your company in BUSY, then go to Administration and click on configuration.
Step 7: Select Features / Options and click on GST / VAT, here you will see a option called E invoice Required.
Step 8: Set Y to turn it on and mention your place and pincode.
Step 9: Then enter GSP user id and password in GSP Configuration tab and save.
Step 10: Go back to Administration and click on configuration.
Step 11: Choose the Voucher Series Configuration option and select the voucher type such as Sale, Purchase etc.
Step 12: Then, select the voucher series and click on Voucher Configuration.
Step 13: Here, you will see options of Input Transport Details, Generate E way Bill After Saving, set Y to enable that. 
Step 14: You need to mention Valid GSTIN, Station, Pincode in party master.
Step 15: You also need to mention proper tax categories and HSN / SAC codes in item master.