How do I link my BUSY with the e-invoice portal?What is the process for canceling an e-invoice in BUSY?

To link BUSY with E invoice portal for automatic generation of E invoice, 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.
To cancel an e invoice in BUSY, you can follow these steps:
Step 1: Open the voucher of which e invoice you want to cancel.
Step 2: Click on cancel button or press Ctrl+X shortcut. 
Step 3: Specify the reason and remarks for e invoice cancellation.