e-Invoice Trial web-site is released in
https://einvoice1-trial.nic.in. Bulk upload facility can be used here for IRN generation.
e-Invoicing System for sandbox API interface (for testing) has been released on portal
The taxpayer with aggregate turnover of Rs.500 Cr. and above during last financial year
can register and test the APIs. Bulk IRN generation facility will also be released shortly.