Why can't I generate invoices in BUSY locally, and what steps enable invoice generation?

Follow below steps for enable invoice generation in BUSY locally:
 Note: Ensure your BUSY model must be Standard/Saffron/Enterprise/Emerald and yur BLS (BUSY License Subscription)
 Step 1: Login to https://ewaybillgst.gov.in/login.aspx.
 Step 2: In menu go in registration option.
 Step 3: Click on for GSP.
 Step 4: Mention the OTP which you will get on your registered email or mobile number on portal.
 Step 5: Click on add new if you have created previously then first freeze it then create another.
 Step 6: Then select GSP provider as, webtel electrosoft pvt. ltd and pinnacle finserv advisors private limited.
 Step 7: Mention the 3 charcater as it will ask.
 Step 8: Create the password then re check it and save.
 Step 9: Then go in BUSY and under administration select configuration.
 Step 10: Click on feature/Options.
 Step 11: Go in GST/VAT.
 Step 12: Then enable E-Way bill /E-Invoice required.
 Step 13: Mention station and pincode and done given configuration as per your requirement
 Step 14: Click on GSP configuration.
 Step 15: Then define the GSP ID which we have created through E-Way bill portal.
 Step 16: Ensure transport details for local sale/purchase must be enable.
 Step 17: Save the configuration.
 Step 18: Go back and click on voucher series configuration under the configuration option.
 Step 19: Select desired voucher type and series then click on voucher configurtion.
 Step 20: Enable the option of generate e-invoice after saving.